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Food and Agriculture: The future of sustainability - Sustainable Development in the 21st century (SD21) - Sustainable ...
Sustainable
                             Food and Agriculture:
           Development
in the 21st century (SD21)   The future of sustainability
Food and Agriculture: The future of sustainability - Sustainable Development in the 21st century (SD21) - Sustainable ...
Sustainable
                             Food and Agriculture:
           Development
in the 21st century (SD21)   The future of sustainability
Food and Agriculture: The future of sustainability - Sustainable Development in the 21st century (SD21) - Sustainable ...
Study prepared by Daniele Giovannucci,1 Sara Scherr,
Danielle Nierenberg, Charlotte Hebebrand, Julie
Shapiro, Jeffrey Milder, and Keith Wheeler.

A prime objective of the report is to stimulate – not
to end – a healthy discussion that integrates and
respects diverse “world views” on food and agriculture.
Some sections may be challenging from one or
another perspective and we hope that readers will
appreciate the evidence and the value of consensus
on several key areas.

This study is part of the Sustainable Development in the
21st century (SD21) project. The project is implemented
by the Division for Sustainable Development of the
United Nations Department of Economic and Social
Affairs.

This publication has been produced with the support
of the European Union and the Committee on
Sustainability Assessment (COSA). The contents of
this publication are the sole responsibility of the United
Nations Department of Economic and Social Affairs and
the authors and do not necessarily reflect the views of
the European Union.

Suggested citation: Daniele Giovannucci, Sara Scherr,
Danielle Nierenberg, Charlotte Hebebrand, Julie
Shapiro, Jeffrey Milder, and Keith Wheeler. 2012.
Food and Agriculture: the future of sustainability. A
strategic input to the Sustainable Development in the
21st Century (SD21) project. New York: United Nations
Department of Economic and Social Affairs, Division for
Sustainable Development
Food and Agriculture: The future of sustainability - Sustainable Development in the 21st century (SD21) - Sustainable ...
Executive Summary
Food and Agriculture: The future of sustainability - Sustainable Development in the 21st century (SD21) - Sustainable ...
Our population trajectory means that from now to            food systems. Rather than simply “more” production,
2030, the world will need to build the equivalent of        we must also consider what would be “better”
a city of one million people in developing countries,       production and better food systems.
every five days! There is widespread consensus that,
going forward, farmers must produce more food per           There are many who advocate a profound re-thinking
unit of land, water, and agrochemicals. To do so,           of our current models and, to better serve our coming
however, they simply cannot continue producing in           needs, would re-imagine and transform the world’s
the same way. They will have to do this while facing        major agriculture and food systems, not just tinker
climate change, volatility, shifting nutrition needs, and   at the margins or modify them incrementally. Recent
the increasing scarcity of most of the physical factors     decades have seen such re-imagining result in
of production. Agriculture is at the threshold of a         radical and world-changing innovations in every field
necessary paradigm shift.                                   from politics (social network media) to healthcare
                                                            (nanotech-based diagnostics and drugs) and
This paper illustrates how leading thinkers imagine         communication (mobile telephony).
our future food and agriculture world. It eschews
positions and instead invites reasoned discussion.              For the first time at a global level, food
It cuts across the thought silos intrinsic to different      production faces multiple limiting factors for
world views and partisan values to identify consensus         key resources such as land, water, energy
and also disagreement. We solicited input from                and inputs. We must use this challenge to
leading experts in different dimensions of agriculture,
                                                                     stimulate creative innovation
representing the perspectives of the natural and social
sciences, developing and developed countries, policy
and academia, public and private. Respondents were          Main trends and challenges
asked about most significant trends and the most
important priorities in the next 20 years to ensure         There are opportunities and also considerable
sustainable food and agriculture systems.                   challenges and some are relatively new. For example:
                                                            • We now face astonishing levels of waste, 30–40
Farming has enormous impacts on the world’s most               percent of all food, and at every step of the food
critical resources. Accordingly, farmers will have to          cycle. Every year, high percentages of the food
produce while also ensuring the provision of various           produced in developing countries never makes it
vital ecosystem services. If they do not, we will not          to market and consumers in rich countries waste
only degrade those resources but also exhaust the              as much food as the entire net food production of
ability to produce enough food.                                sub-Saharan Africa.
                                                            • We are aiming at the wrong goal. For the first time
These expectations pose quite a challenge and the              in history we have as many overweight people as
overall outcome depends very much on the response              undernourished people and the consequences of
of millions of mostly small and medium farmers. The            our emerging dietary habits are on a disastrous
current ‘more production’ orientation is so outdated           trajectory for human health and for ecosystem
and unresponsive to our current needs that it is causing       health. Yet, agriculture policy concentrates mostly
its own problems, particularly for our environment             on production and trade and is curiously divorced
and natural resources. Although food is critical, it is        from the vital issues of good nutrition. We need to
not just about food. We have a pressing need for new           actively shift our focus to two areas:
approaches in policies and structures that realistically           a) more access since we already have more
account for the formidable environmental impacts and                   than 4000 kcal per person per day in traded
consider the social consequences of our evolving agri-                 foods; and

iv                                                                         Food and Agriculture: The future of sustainability
Food and Agriculture: The future of sustainability - Sustainable Development in the 21st century (SD21) - Sustainable ...
b) more nutrition or healthy food because               productive lands are lost annually through soil

                                                                                                                            Executive Summary
            the explosion of empty calories in many             erosion and degradation, much of it in developing
            developing countries reflects the meteoric          countries. Besides its production function,
            rise of the clinically overweight in many           agriculture needs to integrate other vital functions
            industrial economies.                               of ecosystem management as central features of
•   Despite their increasing importance, the current            its development.
    trends in livestock and biofuels are likely to
    contribute to more food-related crises due to their      Where will solutions come from? As many
    inefficient use of food-related resources.               governments have retreated from agricultural
•   Pressures on food prices are likely to continue          investment there is a shifting re-organization of roles
    since they are exacerbated by volatile market            and of governance from public to private. Clearly,
    dynamics, inadequate global coordination and             private enterprise is a powerful factor, and even more
    the multiple effects of population growth, energy        so with increased concentration all along the supply
    markets, climate change, land degradation and            chain. Firms themselves also face new governance
    water scarcity.                                          challenges with volatility in supplies and markets
•   Concentration in supply puts us at increasing            and increasingly transparent operating and reporting
    risk. With more than 50,000 edible plants in the         conditions. While many firms serve only their private
    world still, over well half of our food comes from       interests, an increasing number of forward-looking
    only three. Concentration in the number of firms         firms recognize the need to create shared value and
    managing the global distribution of food supplies        not just profit if they are to thrive in the long term. How
    may also contribute to risks.                            can public governance work with companies to foster
•   Governance is shifting. The main actors are not          both public and private benefits? How can we now
    heading in quite the same direction. Agriculture         employ vastly improved methods for measuring and
    discussions are increasingly oriented toward             understanding the impacts we are creating and use
    ecological approaches that recognize the limits          these to evolve new learning pathways for producers,
    imposed by natural resources and toward improved         communities, firms, and policymakers? The public
    social outcomes. However, many governments,              sector must offer a more thoughtful and principled
    international agencies, multilateral and bilateral       guidance that takes into account longer-term public
    institutions are only beginning to actively invest       needs and the private sector will have to be a major
    in such concepts in agriculture; whereas a few           part of the solutions to the new challenges of our food
    food companies and NGOs are taking the lead              and agriculture systems since its future depends on
    instead. Corporate power has grown to easily rival       the sustainability of these systems as well.
    the influence and effect of the state, changing
    the dynamics of local and global food systems.           In light of the state of agriculture, there is agreement
    Consequently, we will not advance effectively            in a number of important areas even across the
    unless we address how public policy and private          distinctive world views embodied in the four diverse
    sector investment choices integrate toward a             groups that undertook this process: Policy and Trade;
    common and shared good.                                  Business Specialists; Rural Livelihoods and Poverty;
•   Agriculture is one of the biggest threats to a healthy   and Environmental Sustainability. Being explicit about
    environment. It uses most of our available fresh         both the differences and the areas of consensus
    water and some 20,000–50,000 km2 of potentially          enables us to focus on realistic efforts right now.

Food and Agriculture: The future of sustainability                                                                      v
Food and Agriculture: The future of sustainability - Sustainable Development in the 21st century (SD21) - Sustainable ...
Nine key areas of consensus have emerged as the key
paths of action:
1. Organized small and medium farmers, fully including
    women farmers, should be a primary focus of
    investment – recognizing that private enterprise will
    play a significant role in many solutions
2. Define the goal in terms of human nutrition rather
    than simply “more production”
3. Pursue high yields within a healthy ecology – they
    are not mutually exclusive and policy and research
    must reflect that
4. Impel innovation and the availability of diverse
    technologies suitable in different socioeconomic
    and ecological contexts
5. Significantly reduce waste along the entire food
    chain
6. Avoid diverting food crops and productive land for
    biofuels, but explore decentralized biofuel systems
    to promote energy and livelihood security that also
    diversify and restore rural landscapes
7. Insist on intelligent and transparent measurement
    of results – we cannot manage what we cannot
    measure
8. Develop and adapt public and private institutions
    that can effectively respond to these new goals
9. Motivate and reward investments and business
    systems that result in measurable impacts to the
    “public good”

vi                                                          Food and Agriculture: The future of sustainability
Food and Agriculture: The future of sustainability - Sustainable Development in the 21st century (SD21) - Sustainable ...
Acknowledgements
Food and Agriculture: The future of sustainability - Sustainable Development in the 21st century (SD21) - Sustainable ...
This study is part of the Sustainable Development            Group 2: An Agricultural Production and
in the 21st century (SD21) project. The project              Environmental Sustainability Group was convened
is implemented by the Division for Sustainable               by Sara Scherr and Jeffrey Milder of EcoAgriculture
Development of the United Nations Department of              Partners 5, which offers an independent platform
Economic and Social Affairs.                                 for cross-sectoral dialogue and action among
                                                             diverse stakeholders – from farmers and community
This publication has been produced with the support          organizations to international businesses, policy
of the European Union and the Committee on                   makers, NGOs and donors – striving for a world where
Sustainability Assessment (COSA). The contents of            agricultural communities manage their landscapes
this publication are the sole responsibility of the United   as eco-agriculture to enable them simultaneously
Nations Department of Economic and Social Affairs            to enhance rural livelihoods, conserve biodiversity
and the authors and do not necessarily reflect the           and ecosystem services, and sustainably produce
views of the European Union.                                 crops, livestock, fish, and fiber. The Group included
                                                             researchers and agricultural NGO and farmer leaders
The concept for this paper was developed by Daniele          from 14 countries who have been developing and
Giovannucci of the Committee on Sustainability               promoting innovative agricultural production systems
Development and David Le Blanc of the United Nations         that have ecosystem benefits.
Department of Economic and Social Affairs (DESA).
                                                             Group 3: The Rural Livelihoods and Poverty Expert
Four broad-based groups participated in this high-level      Group was coordinated by Danielle Nierenberg
effort to solicit views of thought leaders from all facets   of Worldwatch Institute’s Nourishing the Planet
of agriculture on how the food and agricultural system       project4, an evaluation of agricultural innovations that
could become significantly more sustainable while            are working to alleviate hunger and poverty, while
best meeting the need for global food security.              also protecting natural resources and promoting
                                                             environmental sustainability and social justice. The
Group 1: Policy and Trade Group convened by                  group consisted of a diverse set of contributors
Charlotte Hebebrand of the International Food                ranging from authorities on the role of gender in
& Agricultural Trade Policy Council (IPC) 2, which           agriculture and leaders of farmers groups to NGO
promotes the role of trade in creating a more open,          activists and academics from major universities.
equitable, productive and sustainable global food &          Despite the participants’ different backgrounds and
agricultural system. Contributing IPC members include        viewpoints, a number of common themes emerged
high-level former government officials, agribusiness         that point toward agro-ecological solutions that can
executives, farm leaders, academics and civil                that can address challenges to our food system,
society leaders. IPC makes pragmatic trade policy            including the negative effects of climate change on
recommendations to help solve the major challenges           crop production and a growing population.
facing the global food & agricultural system in the 21st
century – the need to promote global food security,          Group 4: This Business Specialists Group was
to sustainably increase productivity, and to contribute      convened by The Keystone Center and coordinated
to economic growth and development. IPC convenes             by Sarah Stokes Alexander, Julie Shapiro and Keith
influential policymakers, agribusiness executives, farm      A. Wheeler.3 The contributors for this paper are
and civil society leaders, and academics from around         primarily, but not exclusively, private sector oriented,
the world in order to clarify complex issues, foster         representing input companies, traders, and food
broad stakeholder participation in policy deliberations,     and retail companies as well as several university
and build consensus around pragmatic policy                  perspectives. The Keystone Center seeks to solve our
recommendations.                                             society’s most challenging environmental, energy, and

viii                                                                         Food and Agriculture: The future of sustainability
Food and Agriculture: The future of sustainability - Sustainable Development in the 21st century (SD21) - Sustainable ...
public health problems. As an independent facilitator            Agriculture Movements, Germany)

                                                                                                                                         Acknowledgements
and mediator, it convenes leaders in the public, private,        Allen Blackman (Senior Fellow, Resources for the Future, USA)
and civic sectors to solve problems and advance                  John Buchanan (Director, Food Security, Conservation
good public policy through productive dialogue. The              International, USA)

Keystone Center facilitates Field to Market, an alliance         José Joaquín Campos Arce (Director-General, CATIE, Costa Rica)

of producers, agribusinesses, food companies,                    John Coonrod (Executive Vice President, The Hunger Project,
                                                                 USA)
retailers, and conservation organizations that is
                                                                 Amanda DeSantis (Leader, Sustainability Initiatives, DuPont USA)
working to facilitate quantification and identification of
                                                                 Michael Doane with Brian Lowry and Tom Nickson (Sustainable
key environmental and socioeconomic sustainability
                                                                 Agriculture Policy, Monsanto Company (USA)
outcomes and metrics, foster industry-wide dialogue,
                                                                 Bill Even (Senior Manager, Biotech Affairs and Regulatory,
and generate processes for continued improvement in
                                                                 Pioneer Hi-Bred International USA)
sustainable commodity agricultural production.
                                                                 Emile Frison (Director-General, Bioversity International, Italy)
                                                                 Dennis Garrity (Director-General, World Agroforestry Centre, Kenya)
Danielle Nierenberg, Karen Hansen-Kuhn, Sophia
                                                                 Celia Harvey (Vice-President, Conservation International, USA)
Murphy, Shiney Varghese and Adam Drewnowski all
                                                                 Carl Hausmann (Managing Director, Global Government and
contributed important data and research for the paper.           Corporate Affairs , Bunge Limited, US)
                                                                 Charlotte Hebebrand (Chief Executive,, International Food &
Dozens of experts representing many different                    Agricultural Trade Policy Council USA)
countries offered their views for the paper. Of course,          Hans Herren (President, Millennium Institute, USA)
the views represented in synthesis do not necessarily            Jikun Huang (Director, Center for Chinese Agricultural Policy –
reflect the contributors’ specific views or the specific         Chinese Academy of Sciences China)
endorsement of the entities they represent. The                  Wes Jackson (The Land Institute, USA)
overall paper is an independent synthesis of many                Robbin Johnson (President, Cargill Foundation and Senior
views wherein some consensus points have emerged.                Advisor, Global Policy Studies, University of Minnesota, USA)
Despite the diversity of sectors represented here,               Nancy Karanja (Professor, University of Nairobi, Urban Harvest,
                                                                 Kenya)
we feel that there could be even more producer,
consumer, or rural community representatives in the              Melinda Kimble (Sr. Vice President for Programs, United Nations
                                                                 Foundation US)
mix. As we look to downscale these conversations in
                                                                 Claire Kremen (Professor, University of California–Berkeley, USA)
the future from the global scale to the more regional/
                                                                 Robert Lawrence (Professor of Environmental Health Sciences,
national/local scale, any conversation on sustainability
                                                                 The Center for a Livable Future, the Johns Hopkins Bloomberg
should directly involve the producers themselves.                School of Public Health, USA)
                                                                 Ted Lefroy (Professor, University of Tasmania, Australia)
We would like to acknowledge the more than                       Helio Mattar (President, Akatu Institute for Conscious
60 contributors from 23 countries for the time and               Consumption, Brazil)
thoughtful inputs that have enriched this process.               Peter May (President, International Society for Ecological
Alphabetically they are:                                         Economics and Professor Federal Rural University of Rio de
                                                                 Janeiro, Brazil)
Ricardo Abramovay (Professor of Economics, University of São     Monique Mikhail (Sustainable Agriculture Policy Adviser, Oxfam
Paulo, Brazil)                                                   GB, United Kingdom)
Bina Agarwal (Director and Professor of Economics, The           David Molden (Director General, ICIMOD, Nepal)
Institute of Economic Growth, University of Delhi, India)        Luis Genaro Muñoz (General Manager, National Federation of
Juliana Albertengo (Program Manager, Agricultura Certificada,    Coffee Growers, Colombia)
Aapresid, Argentina)                                             Mark Murphy (AVP Corporate Affairs, Cargill, USA)
Telmo J.C. Amado and colleagues (Professor, Federal University   Amon Murwira (Professor, University of Zimbabwe, Zimbabwe)
of Santa Maria, Brazil)
                                                                 Keith Newhouse (Director of Business Development, Winfield
Markus Arbenz (Executive Director, Int’l Federation of Organic   Solutions, Land O’Lakes USA)

Food and Agriculture: The future of sustainability                                                                                  ix
Jan Nijhoff (Senior Agricultural Economist, World Bank, Ghana)      Allan Savory (President, Savory Institute, USA and Africa Centre
Mary Njenga (PhD research candidate, Department of Land             for Holistic Management, Zimbabwe)
Resource Management and Agricultural Technology, University         Sara J. Scherr (President, EcoAgriculture Partners, USA)
of Nairobi and Urban Harvest, Kenya)                                Hiroshi Shiraiwa (Former Counselor, Japan International
Ruben Nunes (Professor, Universidade de São Paulo, Brazil)          Agriculture Council, Former Director, Mitsui & Co., Japan)
Herbert Oberhaensli (Vice President, Economics and                  Samran Sombatpanit (President Emeritus, World Association of
International Relations, Nestle S.A. Switzerland)                   Soil and Water Conservation, Thailand)
Ruth Oniang’o (Editor-in-Chief, African Journal of Food,            Alexandra Spieldoch (Gender and Food Systems Consultant
Agriculture, Nutrition and Development (Kenya), Adjunct             and former Coordinator of the Network of Women Ministers and
Professor of Nutrition, Tufts University USA)                       Leaders in Agriculture, USA)
Rob Paarlberg (B.F. Johnson Professor of Political Science          Ylva Stiller (Corporate Responsibility Manager Syngenta,
at Wellesley College, and Adjunct Professor of Public Policy,       Switzerland)
Harvard University USA)                                             Terry Stone (Sustainability Value Chain Manager, Syngenta
Raj Patel (Honorary Research Fellow at the School of                Corporation USA)
Development Studies, University of KwaZulu-Natal, South Africa)     Steve Suppan (Senior Policy Analyst in Trade and Global
Carlos Perez del Castillo (CGIAR Consortium Board Chair, Uruguay)   Governance Institute for Agriculture and Trade Policy, USA)
Michel Petit (Professor, Institut Agronomique Méditerranéen,        Kazuhiko Takeuchi (Vice-Rector, United Nations University, Japan)
Montpellier and former Director, Rural Development, World           Joachim von Braun (Director, Center for Development Research
Bank, France)                                                       and Professor of Economics and Technical Change, University
Shambu Prasad (Professor, Xavier Institute of Management            of Bonn, Germany)
Bhubaneswar, India)                                                 Judi Wakhungu (Executive Director African Center for
Julian Prior (School of Environmental & Rural Science, University   Technology Studies and co-chair of the International
of New England, Australia)                                          Assessment of Agricultural Science and Technology for
Roberto Rodrigues (Coordinator of the Getulio Vargas Foundation     Development, Kenya)
Agribusiness Center and President of the Superior Council of        Jacob Wanyama Coordinator, LIFE Network Africa Region, Uganda)
Agribusiness of São Paulo’s Federation of Industries, Brazil)       Keith Wheeler (Chairman and CEO, ZedX, Inc. (USA) and
Stephen Ruvuga (Executive Director, National Network of             Chair IUCN Commission on Education and Communication
Farmers Groups, Tanzania)                                           Switzerland)
Maria Sylvia Macchione Saes (Professor, Center for Organization     XuJian Chu (Director, Kunming Institute of Botany, China)
Studies, Universidade de São Paulo, Brazil)                         Peter Erik Ywema (General Manager, SAI Platform, Belgium)

x                                                                                     Food and Agriculture: The future of sustainability
Contents

                                                                                                        Contents
Executive Summary                                                                                iii
Acknowledgements                                                                                 vii
1.    Introduction                                                                                1
               Brief background                                                                   2
               Methodology                                                                        3
2.    State of agriculture and food: An overview                                                  5
      2.1      Introduction: The food challenge                                                   6
               Challenges to food security                                                        8
               Waste                                                                              9
               The challenges of emerging dietary habits for human health and ecosystem health   10
               Pressures on food prices                                                          12
      2.2      Shifting organization of the agriculture sector                                   14
               Shifting roles and governance from public to private                              15
               Role of firms in governance                                                       16
               Integration and global markets                                                    17
               Increased role of technology and innovation                                       18
               Increased concentration and dependence in food supply                             20
      2.3      External challenges                                                               22
               Increase in population                                                            22
               Agricultural land degradation and water scarcity                                  22
               Climate change                                                                    24
               Energy market impacts on agriculture                                              25
               Rethinking agriculture’s role in the ecosystem: a necessary multifunctionality    26
      2.4      Conclusion                                                                        27
3.    Main challenges and priorities of global thought leaders                                   29
               Themes addressed                                                                  30
      3.1      Policy Group                                                                      30
               Introduction: Successes and challenges                                            30
               The Importance of technology and innovation                                       31
               Shifts in research and development to facilitate innovation                       31
               Shifts in policy to incentivize prudent use of limited resources                  32
               Trade and markets                                                                 33
               Focus on smallholders is crucial                                                  34
               Waste and consumption                                                             34
      3.2      Rural Livelihoods and Poverty Group                                               35
               Climate change                                                                    35
               Water                                                                             35
               Soil quality                                                                      36

Food and Agriculture: The future of sustainability                                                 xi
Rural Livelihoods and the role of small holders: Encouraging agroecological farming practices                  37
            Encouraging cooperation and farmer organization and improving extension                                        37
            Research and extension with small-holders                                                                      38
            Health and food safety and new technologies                                                                    38
            Women in agriculture:                                                                                          39
            Bio-fuels                                                                                                      39
            Land grabs                                                                                                     39
            The missing links and what is needed to move forward                                                           40
      3.3   Agricultural Production and Environmental Sustainability Group                                                 41
            Introduction: Many shades of green                                                                             41
            Salient trends and looming challenges                                                                          41
            Biophysical aspects of farm, ecosystem, and landscape management                                               43
            Institutional innovation: Organization, governance, policy, and markets                                        45
            Recommendations                                                                                                47
      3.4   Business Specialists Group                                                                                     49
            Overview of perspectives                                                                                       49
            Population trends and nutrition security                                                                       50
            Sustainability and rural livelihoods                                                                           50
            Sustainability and technology practices                                                                        51
            Sustainability and natural resource inputs (water, soil)                                                       51
            Sustainability and landscape change (biodiversity, conservation,
              ecosystem services and climatic adaptation)                                                                  52
            Sustainability and markets (post-harvest processes, quality and safety,
              bio-based products, and supply chain standards)                                                              53
            Future Choices: Recommendations and next steps                                                                 54
4.    Our choices: Agriculture and food in a changing world                                                                57
      4.1   The next 20 years: Ranking priorities                                                                          58
      4.2   What a new era for agriculture looks like: Consensus areas                                                     59
      4.3   Seven remaining areas of disagreement                                                                          65
      4.4   Conclusion                                                                                                     68
Endnotes                                                                                                                   69

xii                                                                           Food and Agriculture: The future of sustainability
1
                                                Introduction

Food and Agriculture: The future of sustainability             1
The rural world faces a profound challenge. It is           And so, this paper invites inclusiveness as a
already home to about three-quarters of the world’s         starting point from which to give fair and reasonable
poorest people and faces the challenging conditions         expression to distinct world views. In doing so it
of increasingly limited resources such as water, land,      identifies areas of consensus as the vital starting
and its younger people due to migration.6 Yet, we           points. It does not step over the disagreements, simply
expect rural lands to intensify production and feed         gives them room for expression but does not linger on
a third more people in the coming decades. We               them to make a case in one way or another; as such
expect the rural world to care for the ecosystem that       it does not pretend to be an arbiter. Where consensus
agriculture has played a part in degrading. We expect       is not possible, the paper identifies the key issues
that the rural world can offer communities a socio-         that prevent consensus and suggests possibilities for
cultural rootedness that we tend to value in society.       further exploration.
We expect this even in the face of the realities trending
precipitously in the other direction.                       The basic sustainable development ideas and
                                                            paradigms for this study stem from the seeds
Essentially, if we expect to create or sustain              germinated at the 1992 Conference on Sustainable
something close to an optimal balance of the social,        Development, or the Rio Earth Summit. Yet, it
environmental and economic aspects of agriculture, it       recognizes the many advances in both understanding
does not take a scientist to conclude that the current      and achievement in the intervening two decades. Much
course will simply not suffice. The rural world is much     has changed since the early 1990s, but many of the
more than agriculture and yet it is agriculture that most   fundamental challenges the world faces, including how
impacts the rural space and whose products enable           to reduce the number of hungry and malnourished
us all, rural and urban dwellers alike, to live.            remain the same.7 This paper’s particular concern is for
                                                            the role of food and agriculture through the lens of the
In the past decade, researchers have clearly identified     social, economic, and ecological effect on low-income
the range of scenarios for food and agriculture and         countries and emerging economies, but also considers
identified the past impacts as well as the many             the distinct issues of developed countries and the
challenges we face. Accordingly, there is considerable      challenges they face.
agreement about the nature and causes of these
challenges. The challenges are not only those of our
crops and animal husbandry but also those of our            Brief background
soils, biodiversity, and water. However, given the
interpretations of past developments that are framed        This report is one of the studies produced under the
by diverse values and world views, there has been less      project "Sustainable development in the 21st century"
accord about the best solutions.                            (SD21), an undertaking of the Division for Sustainable
                                                            Development of the United Nations Department
The many contributors to this paper, despite having         of Economic and Social Affairs (UN DESA). The
diverse world views, find that they share a number of       overarching objective of the SD21 project is to construct
conclusions about how to achieve a more sustainable         a coherent vision of sustainable development in the
food and agriculture system. This will surprise some.       21st century. The project aims to provide a high quality
Because fundamentally different world views tend            analytical input to the Rio+20 conference.
to feed many common disagreements, the group
addressed these distinctions head on. The group             The report aims to explore the choices available
understood that dynamic results can come from               under different scenarios for the agriculture and food
working together and that to move forward means to          sectors and, where there is agreement, on the likely
seek the areas of consensus based on the evidence.          consequences for long-term sustainability.

2                                                                           Food and Agriculture: The future of sustainability
Aristotle, Galileo, and Oppenheimer would be quite           are intimately tied to looming water shortages,

                                                                                                                            1. Introduction
familiar with one aspect of our science today. They          environmental degradation, and political instability due
too faced the reality that people with diverse values        to higher food costs or shortages. The issues are not
and politics, even diverse levels of tolerance for risk,     those of political bickering but issues of the quality
tend to have diverse interpretations of evidence and         of life and even death for considerable numbers of
science. Today, this is further fueled by vast amounts       people. Even where food appears plentiful, in the more
of data that makes it easier to select the data that suits   affluent realms of many decision makers, the available
a particular world-view and bolsters a position.             choices in our agri-food systems are exacerbating
                                                             lifestyle and consumption patterns that are leading
The result is that we may be increasingly operating in       to costly health crises as substantial portions of the
mental silos wherein our selected world view leads us        population – about one-third in the US alone – are
to believe that we are correct and perhaps uniquely so.      becoming significantly overweight and even obese.
Of course, mental silos imply distinct and sometimes         From too much to too little, food is so primal and so
parochial limitations in so much as they intrinsically       interwoven into our world views that it can be difficult
constrain and shelter our world view. Mental silos           to look at the evidence with a neutral, open mind.
further influence our choices of what to measure, thus
spiraling toward an ever more inward looking approach        The goal of the paper is to bring to light the “high
that is, in many ways, the antithesis of good science.       impact” areas for consideration by decision-makers,
                                                             focusing on areas of consensus and areas where
There are heated debates about the “right” policies          decisions will have to be taken. The contributors to
for the agriculture and food sector that could lead to       this report are a very diverse group of global agri-food
sustainable development, and these are sometimes             leaders that see the value of stepping outside of their
fundamentally divergent because they are typically           silos. Each of these leaders proposes key avenues to
grounded in specific world views. Those views shape          move forward and points to the roadblocks in the way.
attitudes towards dimensions such as government              By synthesizing these approaches we see areas of
intervention, how distributional issues should be            convergence. We can also see the areas of divergence
addressed, and the roles of corporations and markets         and thus better determine what is missing or what
in society. There has often been a tendency for the          needs to be convincingly demonstrated in order to get
proponents of different world views to advocate              greater agreement. The purpose of this report is not to
for “silver bullets” or blanket policies. However, in        diminish or deny any approach toward sustainability;
order to grasp the choices we face in addressing the         instead it is to explore the potential value of each in the
challenges of the sector it is necessary to be free of       spirit of open scientific inquiry.
our silos and honestly consider all the options. This
is critical if proposed policies are to be tested not        The consensus of these thought leaders on both
only in light of past development experience but also        innovative and of well-developed approaches is a
considered in an integrated manner that accounts             valuable starting point to go beyond merely partisan
for the emerging – rather than the past – economic,          discussions. Finding the areas of common ground
social, and environmental context.                           keep discussions and collaboration open and that
                                                             spirit itself could be a prerequisite of sustainability.
This paper is a dedicated attempt to open the silos
and to invite reasoned discussion, not so much about
distinct values or politics, but about the range of food     Methodology
and agriculture evidence and the likely scenarios
that we will jointly face. It stems from a belief that the   We solicited input from dozens of leading experts
issues we face are serious. Our agri-food systems            in different dimensions of sustainable agriculture,

Food and Agriculture: The future of sustainability                                                                      3
representing the perspectives of the natural and social    • Resource inputs (e.g. water, soil, seeds, labor,
sciences, developing and developed countries, policy         fertilizer, biocides, veterinary)
and academia, NGOs and farmers. Respondents were           • Trade (free, distortions, standards), trade
asked to provide concise answers to the following            institutions, and intellectual property rights
broad questions:                                           • Consumers
1) What have been the 2–3 most significant recent          • Land tenure and land markets
   trends in food and agriculture since the original Rio   • Financing (including official development assistance
   Summit in 1992?                                           foundations, and private)
2) What are the most important actions that have to        • Agricultural practices on productivity, conservation,
   occur in the next 20 years to ensure sustainable          volatility, biodiversity, ecosystem services and
   food and agriculture systems?                             climactic adaptation
3) What are the top 3 issues and which are a priority
   to do first?                                            To ensure fair representation of distinct values
                                                           and world views, a set of four Expert Group
After initial discussions, the following categories        Coordinators gathered and synthesized the work
were selected as guideposts for the comments of the        of those contributors with whose world views they
participants although they were not strictly limited to    are familiar and frequently interact. Each Expert
these:                                                     Group Coordinator was asked to also consider the
1. Global nutrition security                               Expert inputs in terms of their social, economic, and
2. Water                                                   ecological impacts: the three balanced lenses of
3. Soil                                                    sustainability.
4. Technology
5. Biofuels                                                There is particular concern for the impact on low-
6. Rural livelihoods and role of small holders             income countries and emerging economies, but we
7. Climate change                                          also considered the distinct issues of developed
8. Natural resources and biodiversity                      countries (food deserts and food-related diseases i.e.
9. Health and food safety                                  obesity and diabetes).

The complementary topics of finance, logistics, price      The overall process was designed and managed by
volatility, food sovereignty, subsidies and trade were     the Project Coordinator who drafted the final report in
also covered as each contributor deemed appropriate.       collaboration with the Group Coordinators.

We also asked that they consider the following in their    In the final section of this paper, we will synthesize
replies, the role of:                                      key areas of agreement, complementarity, and
• Governments (enabling framework, taxes and               disagreement among the diverse groups of expert
   incentives, role in research and extension)             contributors. The narrative thus strives to provide a
• Markets (including post-harvest) and consumption         balanced view of the relative frequency and emphasis
   (prices, access, demand trends)                         of the views expressed. In many areas, quotations
• Farmers and their organizations                          highlight salient arguments and examples that
• Business, supply chains, and power relations within      powerfully express or illustrate key messages of each
   the chains                                              group.

4                                                                          Food and Agriculture: The future of sustainability
2
    State of agriculture
    and food: An overview
2.1 Introduction: The food                                                     “The world's hungry are not just numbers.
    challenge                                                                  They are people – poor women and men
                                                                               struggling to bring up their children and
                                                                               give them a better life.”
Of the world’s 1.1 billion extremely poor people, about
                                                                               Yukiko Omura, IFAD
74 % (810 M) live in marginal areas and rely on small-
scale agriculture. While the world currently produces
enough food to feed everyone, at least one billion                         Sub-Saharan Africa has the highest proportion of
people remain food insecure.8 Although the incidence                       undernourished people, 30 percent in 2010, while
of hunger dropped from a ratio of one in three in 1960                     the Asia Pacific region has the most undernourished
to affecting roughly one in seven people by the 1990s,                     people (578 million) according to the FAO. Two thirds
the trend reversed in the 1990s and the absolute                           of the world's undernourished live in just seven
number of people blighted by hunger continues                              countries – Bangladesh, China, the Democratic
to grow. In 2009, for the first time in history the                        Republic of Congo, Ethiopia, India, Indonesia and
population considered to be malnourished exceeded                          Pakistan.9 Nearly all countries, even some of the
one billion people (see Fig 2.1).                                          wealthiest, have some level of food insecurity.

Figure 2.1 Trend of undernourished people (millions) 1970–2010

    1050
                                                                                                                                 2009

    1000

      950

                                                                                                                         2008
                                                                                                                                     2010
      900

                                      1979-81
              1969-71                                                 1990-92
      850
                                                                                                                       2005-07
                                                                                                        2000-02

      800

                                                                                     1995-97
      750

              1970                         1980                         1990                          2000                          2010

Source: FAO. 2011. Rural Poverty Report. Rome – using other FAO publications sources: “State of Food Insecurity in the World” and “Global
Hunger Declining but Still Unacceptably High.

6                                                                                              Food and Agriculture: The future of sustainability
Global agricultural production increased at an average              correct, then if current dietary consumption patterns

                                                                                                                            2. State of agriculture and food: An overview
rate of two percent a year between 1961 and 2007.10                 continue on the same trajectory, feeding more than
The unprecedented increase of the last 6 decades                    9 billion people by 2050 means that we will need to
resulted primarily from yield increases but also from               produce as much food in the next 40 years as we have
some expansion of land area under irrigation and                    in the last 8-10,000.14
under cultivation.11

It is also estimated that by 2050 we will add another
2.3 billion people to the current population of 7 billion,12
with most of this increase happening in countries that                Definition of Food Sustainability: ensuring
are home to significant numbers of people suffering                    nutrition security without sacrificing the
from food insecurity, malnutrition, and extreme                        long term health of the ecosystems and
poverty13 (See Fig. 2.2). If the UN’s prediction is                      vital cultures that provide our food.

Figure 2.2 Global population and expected growth by region

Source: UN data from Global Harvest Initiative GAP Report (2011).

Food and Agriculture: The future of sustainability                                                                      7
Challenges to food security                                   Food security exists when all people, at all
                                                              times, have physical, social and economic
The realization of “food security for all” faces a number     access to sufficient safe and nutritious food
of inter-related challenges. While there are barriers to      that meets their dietary needs and food
access and distribution in urban areas15 IFAD estimates       preferences for an active and healthy life.
that nearly 3/4 of those living in extreme poverty reside     United Nations Committee on World Food Security
in rural areas. Many rural areas in developing countries
often lack agricultural extension services, processing
capacity, credit, roads, irrigation, transportation,
energy, and storage infrastructure. For urban and           Box 2.1 Recommendations of The High Level
rural populations alike, the lack of adequate income        Panel of Experts on Food Security and Nutrition
is one of the main hurdles to overcoming hunger. This
is particularly true for women whose challenges are
                                                               The HLPE report recommended:
exacerbated by less access to land, scarce credit, and
                                                               • that governments consider distinct trade rules from a
lower levels of education.                                       food security perspective for low-income, food deficit
                                                                 countries.
Chronic hunger is fundamentally not an issue of just           • a look at forms of international cooperation regarding
more food; it is an issue of access. India, for example,         world food stocks and guidelines for their efficient
                                                                 management
is a net exporter of food with millions of tons of grain
                                                               • tighter regulation and oversight of commodity market
in storage, and 47% of its children are malnourished.            speculation on the grounds that private individuals
India is not unique; the situation is similar in a number        and firms enjoy the benefits of increased speculation,
of countries. So, while increasing production is an              while the public has to pay for any systemic failures
                                                               • that governments abolish biofuels targets, subsidies,
important part of the strategy for keeping food prices
                                                                 and tariffs
reasonable, hunger often has more to do with access            • looking at waste, both in developed and developing
and poverty and sometimes politics. It can be best               country contexts
understood as an issue of opportunity. It occurs when          • the need to rethink agricultural production systems
people lack the opportunity to translate a full day’s            from an ecological perspective

work into enough food or money. Reducing poverty
and inequality, particularly for women who provide
most of the family’s food, is key to solving hunger.16
The High Level Panel of Experts on Food Security
and Nutrition (HLPE) in its report on food security and     Well-functioning markets can be a crucial component
volatility cautions that public investments must likewise   for providing overall adequate nutrition security yet,
be re-oriented. 17                                          in certain cases, at least some food will need to be
                                                            locally farmed and available. Thus, the challenge
Moving from hunger to health requires not just calories     facing the global community is not only to increase
but also the consideration of nutrition. Nutrition          production to meet the caloric requirement of a
security goes beyond the basic food security calories       growing population, but to ensure access to nutritional
needed for survival. It often requires a diversity of       food to ensure healthy and productive lives.
foods in addition to the starchy staple crops and basic
cereals. These sources of nutrition include fruits,
vegetables, and some diverse proteins. For the poor,
good nutrition can be an additional cost challenge
even in the wealthiest countries (Figure 2.3).

8                                                                            Food and Agriculture: The future of sustainability
Figure 2.3 Cost of food products relative to their nutritive value (USA data)

                                                                                                                                                           2. State of agriculture and food: An overview
          100 kcal of these food groups                                                                                 Cost US$

          Sweets & Beverages                                                                                            .22

          Meats & Poultry                                                                                               .41

          Fresh Fruits                                                                                                  .54

          Fresh Vegetables                                                                                              .68

Figure 2.3 is based on characteristics of 1387 foods from the Food and Nutrient Database for Dietary Studies and the Center for Nutrition Policy and
Promotion food prices database. Depictive photos are representative of category; price is based on averages within the group.
Source: Drewnowski, Adam. 2010. The cost of US foods as related to their nutritive value. American Journal of Clinical Nutrition. 2010 November;
92(5): 1181–1188.

Waste                                                                           In wealthier countries much of the losses occur at the
                                                                                retail and consumer levels while in poor countries this
Politics and markets affect the availability of food and                        is due to poor post-harvest technologies including
so does waste. In fact, waste may be the single most                            processing, storage, and preservation. Reports note
important area that can be addressed with relative                              that in the UK, approximately one-third of all food
ease. It accounts for losses exceeding 1 billion metric                         purchased is not eaten.20 The U.S., with more than
tons each year. Every year, consumers in rich countries                         14 percent of its population classified as food
waste almost as much food (222 million tons) as the                             insecure21, has nonetheless high levels of waste as
entire net food production of sub-Saharan Africa                                Figure 2.4 illustrates. According to the US Environmental
(230 million tons).18 On average, 30–40 percent of all                          Protection Agency, food waste accounts for nearly 13%
food is wasted before it reaches peoples’ stomachs.19                           of municipal solid waste in the United States.22

Food and Agriculture: The future of sustainability                                                                                                     9
Figure 2.4 Average waste of select foods in the US in 2008 (in kilograms per person per year)

         Grain products                                       63                                                  26

      Fresh Vegetables                                  54                                            25

               Red meat                    31                           19

                                                                                                   Eaten               Wasted
                 Poultry             20                 13

                           0         10         20           30        40         50          60           70          80          90
                                                             Kg per person, per year

Note: Includes small levels of natural loss, other than waste, coming from shrinkage (moisture loss), loss from mold, pests, etc.
Source: Buzby, Jean, Jeffrey Hyman, Hayden Stewart, Hodan Wells. 2011. The Value of Retail- and Consumer-Level Fruit and Vegetable Losses
in the United States. The Journal of Consumer Affairs. Vol 45, Issue 3, p. 492-515.

In addition to the waste and loss, the additional                        them obese.26 Obesity is just one of these challenges
conversion of some foods to non-human uses (i.e.                         that, according to the World Health Organization and
animal feed) then up to half the world’s harvest                         several medical journals, predisposes a population to
disappears between field and the table. While a                          numerous related chronic ailments from diabetes to
substantial percentage of the world’s grain output                       cardiovascular disease, hypertension, stroke, and even
today is fed to animals, The World Bank notes that at                    certain forms of cancer.27 A number of countries in
least 11 percent of the world’s corn crop is fed to cars                 Asia, the Middle East, Northern Europe, the Americas,
and trucks in the form of biofuels, as are many other                    and the Pacific now have increasingly overweight and
food crops such as soybean, canola and sugarcane.23                      obese populations and the specific characteristics and
In terms of efficiency, livestock is challenged by                       quantities of foods they eat have become a serious threat
many other food sources. For example, soy ­­– a major                    to their health.28 The numbers may be difficult to believe.
livestock feed –­­­ ­can provide up to 15 times more protein             In the U.S., a majority is overweight and a third of the
per hectare than livestock.24 Many less well-known                       adult population is obese.29 Conversely, and somewhat
legumes also have higher levels of digestible protein.                   paradoxically, nearly 15% of the U.S. population is food
                                                                         insecure.30 The trend toward food-related illness is not
                                                                         limited to the US and not even to the most affluent
The challenges of emerging dietary                                       countries; the issue is emerging in developing countries
habits for human health and ecosystem                                    as well.31
health
                                                                         Changing dietary habits, particularly among the fast-
For the first time in history, among both poor and affluent              growing populations of developing countries, are creating
segments of society, the quality of nutrition and diet                   an increased demand for milk and meat-based proteins
poses entirely new health care challenges that we have                   with considerable implications for food production,
never faced on a wide scale.25 Globally, there are more                  processing, and retail systems (see Fig. 2.5).32 Livestock
than 1 billion overweight adults, at least 300 million of                is a significant source of nutrition and even non-food

10                                                                                          Food and Agriculture: The future of sustainability
uses for a substantial number of people globally. It has              Though there is some evidence, it is not conclusive

                                                                                                                                      2. State of agriculture and food: An overview
considerable and growing importance in most cultures                  to what extent these shifting dietary consumption
and in many diets. However, traditional pastoral cultures             patterns of livestock products may have unintended
and mixed crop-livestock husbandry systems are being                  human health consequences,36 but it is clear that
replaced by radically different intensive or industrial               intensive meat production is a resource-intensive
systems. As intensive systems increase in popularity,                 system using large amounts of land, water, and
livestock are increasingly fed the same types of grains               energy.37 Confined Animal Feeding Operations
favored by humans.                                                    (CAFOs) have also raised ethical questions about
                                                                      the treatment of animals particularly in recent years
Grains such as rice, wheat, and maize account for about               as their popularity has soared in comparison to
half of human caloric intake.33 About half of the world’s             managed grazing systems. CAFOS produce primarily
grain is now used to produce animal feed and animal                   pork, beef and poultry. According to the FAO, pigs,
consumption is projected to double between 2000 and                   cows and chickens together account for nearly 95%
2050.34 A change in the availability of grains has an                 of global meat production. Perhaps the greatest
effect on the food available for a large part of the human            challenge of meat production is that the resources
population.35 Technological improvements in animal                    used are often substantially greater than those needed
genetics and nutrition have improved their efficiency as              for other common foods and thus present both an
food sources. However, if current meat consumption                    environmental dilemma and an ethical choice for food
patterns continue, it will be necessary to find alternative           security.
many more animal feed sources (e.g. waste matter,
perennial shrubs and grasses) that can be grown on                    Grazing land, plus land for crops to feed animals, makes
lands that are not suitable for annual food crops.                    up 80 percent of all agricultural land – 3.4 billion hectares
                                                                      for grazing and .5 billion hectares for feed crops.38
                                                                      Forests are often cleared to make space for this grazing
Fig 2.5 Shifting demand for meat-based proteins                       and feedcrop land; over the last 25 years, the world has
                                                                      lost forests equal in size to India.39 Approximately
                                                                      3 million hectares are lost per year as a result of livestock
            Demand for meat proteins (million metric tons)            production. Some 70 percent of this loss occurs in Latin
  250
                                                                      America, where forests are cleared both for grazing
                                                        213           cattle and for feed crops.
  200              Developed
                   countries
                   Developing                                         Nearly one-third of the fresh water contamination from
  150              countries
                                                                      nitrogen and phosphorous in the United States comes
                                  111
                                                           114        from the livestock sector as a result of animal manure
  100
                                    98                                and the pesticides, herbicides, and fertilizers used to
              77
   50
                                                                      produce animal feed.40
               32

     0                                                                At the far end of the scale, it is estimated that an
               1974                1997              2020 (Proj.)     astonishing 15,500 liters of water is needed to
                                                                      produce just one kilogram of beef (Table 2.1) and meat
                                                                      production takes a toll on the environment in a number
Source: Rosegrant, Mark. Michael Paisner, Siet Meijer, Julie
                                                                      of other ways: it is energetically inefficient when
Witcover, 2001, 2020 Global Food Outlook: Trends, Alternatives, and
Choices, International Food Policy Research Institute. FAO data is
                                                                      animals are fed with food-crops since they can only
very similar.                                                         absorb a third of the nutrients leading to considerable
                                                                      pollution; deforestation and land degradation are often

Food and Agriculture: The future of sustainability                                                                               11
associated with livestock grazing; and livestock is                  Mixed crop-livestock systems, often at a smallholder
responsible for more greenhouse gases (ca. 18%) than                 level, produce about half of the world’s food and are
the global transportation sector.41                                  necessary for food security.42 While traditional animal
                                                                     husbandry is a vital and necessary part of our food
Table 2.1 Relative resources used for the                            systems, particularly in semi-arid areas such as the
production of beef                                                   Sahel, Andes, Middle East and Central Asia, the more
                                                                     intensive production systems have very different
 Resource              Quantity              Yields
                                                                     resource requirements.43
                       1 hectare             185 kg of beef
 Land
                       1 hectare             13,000 kg of potatoes   One of the biggest challenges facing the livestock
                                                                     industry is to engage the technologies and policies
                       500 liters            1 kg of corn (maize)
 Water                                                               that will internalize the environmental costs.44
                       15,500 liters         1 kg of beef
                                                                     Accounting for the resources and related pollution
                                             1 calorie of soy        could make CAFOs less appealing than integrated
                       2 calories
                                             protein
 Energy                                                              livestock systems that do not compete with common
                                             1 calorie of beef       human foods and have few negative environmental
                       40 calories
                                             protein
                                                                     impacts (e.g., small livestock and aquaculture
 Grains                6–20 kg               1 kg of beef            systems).45 UNEP estimates that if current annual
                                                                     meat consumption were stabilized at the year 2000
Note: the ecological “footprints” of smaller commercially farmed
animals such as poultry are smaller per kg. For some items, data     level (37 kg/capita) instead of its current trend, then
sources differ (likely due to different conditions or measurement    in 2050 that would keep enough cereal available for
methodology) therefore, in some cases, averages are used to
                                                                     human consumption to feed about 1.2 billion people
approach more conservative “consensus” estimates. The potential
outcomes under optimal conditions are eschewed in favour of
                                                                     (400 million tons). Under current policies, such a
typical results. For example, yield potential of existing potato     stabilization of consumption appears to be unlikely
genotypes could raise the per hectare average to 40,000 kg –         and the livestock industry, if it continues unchecked on
http://www.cipotato.org/publications/belgtech/sources.
                                                                     its current trajectory, will paradoxically be one of the
Sources: 1) Leibtag, Ephraim. 2008. “Corn Prices Near Record High,
                                                                     greatest challenges to global food security and to the
But What About Food Costs?” In USDA , Amber Waves, February
2008. Online: http://www.ers.usda.gov/AmberWaves/February08/         environment.
Features/CornPrices.htm.
2) Galloway, James Marshall Burke, G. Eric Bradford, Rosamond
Naylor, Walter Falcon, Ashok Chapagain, Joanne Gaskell, Ellen
                                                                     Pressures on food prices
McCullough, Harold Mooney, Kirsten Oleson, Henning Steinfeld,
Tom Wassenaar and Vaclav Smil.2007. International Trade in Meat:
The Tip of the Pork Chop. Ambio Vol. 36, No. 8 Royal Swedish         According to IFPRI, even without climate change, “the
Academy of Sciences.                                                 prices of rice, maize, and wheat are projected to increase
3) Various water use data www.waterfootprint.org/?page=files/        by 25 percent, 48 percent, and 75 percent, respectively,
productgallery.
                                                                     by 2050, in a business-as-usual scenario”46. There
4) FAO. 2006. Livestock’s long shadow, FAO: Rome.
                                                                     are a number of complex factors that drive food
5) Kanaly, Robert Lea Manzanero, Gerard Foley, Sivanandam
                                                                     prices.47 Competition for natural resources from
Panneerselvam, Darryl Macer. 2010. Energy Flow, Environment and
Ethical Implications for Meat Production. UNESCO: Bangkok.           other sectors adds to the environmental challenge.
6) Pimentel, David and Marcia Pimentel. 2003. Sustainability of      Valuable farm land is being lost as most of the coming
Meat-Based and Plant-Based Diets and the Environment. The            population growth will reside in cities, expanding them
American Journal of Clinical Nutrition, Vol. 78, No. 3 American
                                                                     considerably and presenting increasing pressures on
Society for Clinical Nutrition.
                                                                     arable lands.48 The expansion of biofuels production
7) Smil, Vaclav. 2002. Nitrogen and Food Production: Proteins for
Human Diets. Ambio Vol. 31, No. 2 Royal Swedish Academy of
                                                                     is taking some key commodities out of the food
Sciences.                                                            stream and into the fuels markets.49 Shifting dietary

12                                                                                   Food and Agriculture: The future of sustainability
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