The turkey and ham many are eating this holiday season don't just appear magically on the table. Most are the end product of an increasingly global, industrialized system that is resulting in costly environmental degradation. Better understanding of the true costs of this resource-intensive system will be critical to reducing its negative effects on the environment, says an interdisciplinary team of researchers led by Stanford University's Rosamond Lee Naylor, Walter Falcon, and Harold Mooney.

"Losing the Links Between Livestock and Land" appears in the Policy Forum in the Dec. 9 issue of Science. It represents a synthesis of research by professors at Stanford University, the University of Virginia, the University of California at Davis, the universities of Manitoba and British Columbia in Canada, and the United Nations LEAD (Livestock Development and Environment) program within the Food and Agricultural Organization of UN.

"Sixty years ago, the link between the livestock production and consumption was much more clear and direct, with most consumers getting their meat and dairy products from small, family-owned farms," says lead author Naylor, an economist. Co-author Falcon agrees. "When I was growing up in Iowa, almost all farmers kept both chickens and pigs."

Today, meat consumption has sky-rocketed, and large-scale intensive livestock operations provide most of those products, both in the U.S. and around the world.

Particularly striking is the growth in demand for meat among developing countries, Naylor notes. "China's meat consumption is increasing rapidly with income growth and urbanization, and it has more than doubled in the past generation," she says. As a result, land once used to provide grains for humans now provides feed for hogs and poultry.

Numerous factors have contributed to the global growth of livestock systems, Naylor notes, including declining feed-grain prices; relatively inexpensive transportation costs; and trade liberalization. "But many of the true costs remain largely unaccounted for," she says. Those costs include destruction of forests and grasslands to provide farmland for corn, soybeans and other feed crops destined not directly for humans but for livestock; use of large quantities of freshwater; and nitrogen losses from croplands and animal manure.

Nitrogen losses are especially problematic, says James Galloway of the University of Virginia. "Once nitrogen is lost to the atmosphere or to water, it can have a large number of sequential environmental effects. For example, ammonia emitted into the atmosphere can in sequence affect atmospheric visibility, forest productivity, lake acidity and eventually impact the nutrient status of coastal waters."

Naylor cited Brazil as a specific example of the large impact on ecosystems and the environment. "Grasslands and rainforests are being destroyed to make room for soybean cultivation," she said. The areas are supplying feed to the growing livestock industry in Brazil, China, India and other parts of the world, leading to "serious consequences on biodiversity, climate, soil and water quality."

Naylor and her research team are seeking better ways to track all costs of livestock production, especially the hidden ones related to ecosystem degradation and destruction. "What is needed is a re-coupling of crop and livestock systems," Naylor said. "If not physically, then through pricing and other policy mechanisms that reflect social costs of resource use and ecological abuse."

Such policies "should not significantly compromise the improving diets of developing countries, nor should they prohibit trade," Naylor added. Instead, they should "focus on regulatory and incentive-based tools to encourage livestock and feed producers to internalize pollution costs, minimize nutrient run-off, and pay the true price of water."

She cited efforts in the Netherlands to track nitrogen inputs and outputs for hog farms as one approach. In the U.S., the 2002 Farm Bill provided funds for livestock producers to redesign manure pits and treat wastes, but she notes that much greater public and private efforts are needed to reduce the direct and indirect pollution caused by livestock.

In the end, though, it may be up to consumers to demand more environmentally sustainable approaches to livestock production. "In a global economy with no global society, it may well be up to consumers to set a sustainable course," she added.

Seed funding for the research was provided by the Woods Institute for the Environment, which supports interdisciplinary approaches to complex environmental issues. Naylor, Falcon and Mooney are affiliated with the institute and with the Center for Environmental Sciences and Policy in Stanford's Freeman Spogli Institute for International Studies.

In addition to Naylor, Mooney and Falcon of Stanford and Galloway of Virginia, co-authors are Henning Steinfeld of the United Nations Food and Agriculture Organization; Galloway; Vaclav Smil, University of Manitoba; Eric Bradford, University of California at Davis; and Jacqueline Alder, University of British Columbia.

SEATTLE - There are a billion hungry people in the world. Fifteen thousand children-the equivalent of five times the victims of the World Trade Center bombings-die each day of hunger. Yet it doesn't have to be this way. We can end hunger-if we make a commitment to doing so. The new one-hour documentary Silent Killer: The Unfinished Campaign Against Hunger shows how it can be done. Shot on location in the United States, South Africa, Kenya, Rome, Mexico and Brazil, Silent Killer examines both the problem of hunger and solutions. The documentary and its companion Web site (www.SilentKillerFilm.org) will provide viewers with inspiration and information to become part of the effort to end hunger.

Produced by Hana Jindrova and John de Graaf (Affluenza, Escape from Affluenza), in association with KCTS/Seattle Public Television, Silent Killer will air on several California public television stations as follows:

KTEH/ San Jose: Sunday, October 16 at 5:00 p.m. (please confirm).

KOCE/ Huntington Beach: Sunday, October 23 at 4:00 p.m.

KQED/ San Francisco: Wednesday, November 2 at 11:00 p.m., repeating on

KQED Encore (Digital Channel 189), Thursday, November 3 at 10:00 p.m.

KVCR/ San Bernardino: Thanksgiving evening, Thursday, November 24 at 8 p.m.

KVIE/ Sacramento: Airdate and time to be announced.

KCSM/ San Mateo: Airdate and time to be announced.

(For all other stations, please check local listings).

Narrated by National Public Radio's Scott Simon, the film begins in South Africa's Kalahari Desert, where razor-thin Bushmen use the Hoodia cactus to fend off hunger. But now, a drug firm has patented the Hoodia's appetite-suppressant properties and is using it to make a diet product for obese Americans and Europeans. Hoodia is a metaphor for a world where some people die from too much food, but millions more die from too little.

We discover how serious the problem is in Kenya as we meet Jane Ininda, a scientist who is trying to make agriculture more productive in her country, while her own brother, Salesio, barely survives the drought, poor soils and pests that constantly threaten his crops. Through powerful stories, we come to understand the dimensions of the hunger crisis.

At the World Food Summit in Rome, we learn how activists have been working to end hunger since President John Kennedy declared war on it in 1963. But today, America's commitment to food security is less clear. In fact, world financial commitments to hunger research are now in decline.

But Silent Killer does not leave viewers feeling helpless. A visit to Brazil finds a nation energized by a new campaign called FOME ZERO-Zero Hunger. In the huge city of Belo Horizonte, we meet a remarkable leader and see how, under the programs she supervises, the right to food is guaranteed to all. In the countryside, we are introduced to the Landless Peasants' Movement, which is giving hope to millions of hungry Brazilians.

Can we end hunger, or will it always be with us? Why should we try? What will it take? What are we doing now? Can biotechnology play a role, and if so, how? Is hunger just a problem of distribution, or do we still need to produce more and better crops? These are the questions considered in this exquisitely photographed documentary.

EXPERTS featured in Silent Killer: The Unfinished Campaign Against Hunger and available for press interviews include:

David Beckmann - President, Bread for the World. Since 1991, Reverend David Beckmann has served as president of Bread for the World, a Christian group that lobbies the U.S. government for policy changes to end hunger in the United States and around the world.

Per Pinstrup-Andersen - World Food Prize Laureate 2001. A native of Denmark, Per Pinstrup-Andersen is the H.E. Babcock Professor of Food, Nutrition and Public Policy at Cornell University. He also serves as the chairman of the Science Council of the Consultative Group on International Agricultural Research.

Chris Barrett - Development Economist, Cornell University. Dr. Barrett is a professor of applied economics and management at Cornell University. His focus is on rural communities, primarily in Africa, concentrating on the dynamics of poverty, food security and hunger.

Walter Falcon - Development Economist, Stanford University. Dr. Falcon is the Farnsworth Professor of International Agricultural Policy at Stanford University (emeritus), co-director of the Center for Environmental Science and Policy, and former director of the Stanford Institute for International Studies.

PROGRAM TIE-INS: October 16 is the 25th observance of World Food Day-a worldwide event designed to create awareness, understanding and year-round action to alleviate hunger. (See www.worldfooddayusa.org.) In addition, October 24 is the 60th anniversary of the founding of the United Nations and its first agency, the Food and Agriculture Organization (FAO).

CREDITS: Silent Killer was produced by Hana Jindrova and John de Graaf in association with KCTS/Seattle Public Television and is narrated by NPR's Scott Simon. Writer: John de Graaf. Photographers/Editors: Diana Wilmar and David Fox. Composer: Michael Bade. Executive Producer: Enrique Cerna, KCTS. Funding was provided by The Rockefeller Foundation.

DISTRIBUTOR: Silent Killer is presented nationally by KCTS/Seattle Public Television and is distributed by the National Educational Telecommunications Association (NETA).

WEB SITE: See www.SilentKillerFilm.org for more information about the film, including a full transcript, in-depth interviews with film characters and experts on hunger, a guide for teachers, a list of hunger facts and myths, a detailed "Take Action" section and additional resources. Color images from the film are posted on the site for press use, along with an online press kit.

For nearly two decades, most major developing countries have struggled to introduce market forces in their electric power systems. In every case, that effort has proceeded more slowly than reformers hoped and the outcomes have been hybrids that are far from the efficiency and organization of the "ideal" textbook model for a marketbased power system.

At the same time, growing concern about global climate change has put the spotlight on the need to build an international regulatory regime that includes strong incentives for key developing countries to control their emissions of greenhouse gases. In most of these countries, the power sector is a large source of emissions that, with effort, could be controlled.

The United Nations Framework Convention on Climate Change and the Kyoto Protocol included mechanisms that would reward developing nations that cut emissions, but so far the performance of these mechanisms has fallen far short of their potential.

Beginning in 2002, the Program on Energy and Sustainable Development (PESD) at the Stanford Institute for International Studies (SIIS) and the Indian Institute of Management in Ahmedabad (IIMA) have conducted a set of studies to examine the intersection of these two crucial challenges for the organization of energy infrastructures in the developing world. This research, funded by the U.S. Agency for International Development, examined power-market reforms and greenhouse-gas emissions in two key states in India. At the same time PESD was conducting a comprehensive study of electricity-market reforms in five developing countries (Brazil, China, India, Mexico, and South Africa) as well as detailed analyses of the greenhouse-gas emissions from three provinces in China in conjunction with other research partners.

PESD and IIMA presented their findings at a workshop on January 27-28, 2005, at Stanford University. The workshop brought together scholars studying the organization of the electric-power sector and other infrastructures in developing countries with energy policy makers, technologists, and those studying the effectiveness of international legal regimes, with the aim of not only focusing on new theories that are emerging to explain the organization of the power sector and the design of meaningful international institutions, but also identifying practical implications for investors, regulators, and policymakers.

The workshop offered diagnoses of what has gone wrong and what opportunities have nonetheless emerged. It focused on practical solutions and a look at the prospects for different technologies to meet the growing demand for power while minimizing the ecological footprint of power generation.

One of the key conclusions of the research and the workshop, as discussed by David Victor, director of PESD, is that electricity markets in the developing world have not progressed inexorably and consistently from a state-owned model to an open market-based model. Rather, much as the experience of the past ten years in the United States has demonstrated, reform of electric-power systems has proceeded differentially between parts of the industry and between jurisdictional units, with some segments of the power generation, transmission, and distribution systems still dominated by the state and some segments now fully responsive to signals from the market.

This hybrid condition-with portions of the electricity enterprise deregulated and other portions still fully regulated-has proven to be virtually universal and quite durable as well. For the most part, it also has proven beneficial to the overall operation of the system as well as to climate mitigation due to the fact that introduction of market forces to parts of the system tends to have a spillover effect, helping to improve efficiency in parts of the system that remain under state control.

Tom Heller, SIIS senior fellow, noted that the negotiations leading up to the

development of the Kyoto Protocol and subsequent discussions and experience have

demonstrated that the burden-sharing metaphor-expecting developing nations to

make a proportional investment and effort in reducing greenhouse-gas emissions-

will not be successful. Rather, as gross and per capita energy consumption increases in developing nations, which is occurring especially rapidly in China and India, policies and mechanisms that facilitate investment in efficient and clean energy production, transmission, and end-use infrastructures will need to be developed and rolled out.

The Kyoto Protocol provided a Clean Development Mechanism (CDM) to encourage such investment. However, the conclusion reached by practitioners developing such projects in China is that CDM is an inefficient and insufficient mechanism for fostering the magnitude of development projects that will be required to help mitigate the environmental effects of energy growth in the developing nations.

Two problems with CDM were raised at the workshop. First, the bureaucratic hurdles facing developers of CDM projects are daunting. To date no such project has received certification. Second, the Kyoto Protocol's current round of reductions targets expires in 2012, and uncertainty regarding the likely direction and form of future U.S. and European initiatives provides a disincentive to investment in CDM projects.

Alberto Chiappa, managing director of Energy Systems International, noted the good news is that in spite of these difficulties, investors are finding opportunities to develop projects to provide cleaner sources of energy and improve end-use energy efficiency. Professor P.R. Shukla of IIMA pointed out that there is a great need to align development and climate concerns if future mechanisms for climate mitigation in the developing world are to be successful.

Douglas Ogden, program officer at the Energy Foundation, noted that China has made a firm commitment to greatly increase the market share of electricity from renewable sources to 5 percent by 2010 and 20 percent by 2020 and in 2008 will adopt an automobile fuel-economy standard 20 percent more efficient than U.S. CAFE standards. Also, both China and India are engaged in developing natural gas markets in sectors traditionally dominated by coal.

Mario Pereira, director of Power Systems Research, discussed Brazil's current efforts to develop economical and efficient electricity supply through biomass-specifically ethanol derived from sugarcane bagasse. The ethanol industry was originally developed as a reaction to the oil shocks of the 1970s. Although the majority of electricity in Brazil is provided by hydroelectric projects, sugarcane ethanol has some important advantages. First, the sugarcane fields are geographically close to major centers of demand, and second, sugarcane thrives during drier periods of the year when hydroelectric production declines. The experience in Brazil thus demonstrates that renewables can provide an economically attractive source of energy for developing nations.

Looking toward the future, PESD has several projects under way pertaining to the

intersection of electricity-market reforms and global climate change. The program is expanding its research on power-market reforms through a set of case studies on independent power producer projects in ten developing nations and is also initiating a set of studies examining the introduction of natural gas to regions in India and China.

Much work remains to be done before the interface between electricity-market reform and global climate change is well understood. As energy markets in the developing world expand, addressing this question will become more and more important if we are to stabilize atmospheric levels of greenhouse gases.