Environment

FSI scholars approach their research on the environment from regulatory, economic and societal angles. The Center on Food Security and the Environment weighs the connection between climate change and agriculture; the impact of biofuel expansion on land and food supply; how to increase crop yields without expanding agricultural lands; and the trends in aquaculture. FSE’s research spans the globe – from the potential of smallholder irrigation to reduce hunger and improve development in sub-Saharan Africa to the devastation of drought on Iowa farms. David Lobell, a senior fellow at FSI and a recipient of a MacArthur “genius” grant, has looked at the impacts of increasing wheat and corn crops in Africa, South Asia, Mexico and the United States; and has studied the effects of extreme heat on the world’s staple crops.

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PESD fellow Nadeja Victor presented Global Natural Gas Market and Russian Gas Supply Presentation on March 14 during the "market mechanisms of energy market regulation and ways of improving them" roundtable chaired Anantoliy Yanovskiy, Director, Department of Fuel and Energy Complex, Ministry of Industry and Energy, RF. In the meeting of the Group of Eight energy ministers the following days, the chair's statement was the following:

1. G8 Energy Ministers met in Moscow on 15-16 March 2006 in order to discuss the matters of mutual interest related to global energy security.

2. The reliable energy supply plays a key role in development of worlds economies bearing in mind that the well-being, way and quality of life of people directly depend on access to energy.

3. Ministers are aware that the 21st century is sure to witness a significant increase of the global consumption of energy, primarily by dynamically developing economies. Despite the increased presence of alternative sources in the energy mix, the fossil fuels will remain the basis of the world energy industry for at least the first half of the 21st century.

4. Ministers discussed the challenges to the global energy security, issues related to promotion of market efficiency of the fuel and energy sector. We note that meeting energy security challenges will require reliance on market-oriented approaches aimed at increasing energy supply and stemming growth in demand, while encouraging market-based pricing, competition, energy efficiency, and conservation.

5. Ministers point out the importance of further development and strengthening of dialogue among energy producer, transit and consumer countries, including information exchange on the current situation as well as medium- and long-term plans and programmes of development of their respective energy sectors.

6. Ministers confirm our support for appropriate international initiatives such as the Joint Oil Data Initiative aimed at greater accessibility and transparency of data on reserves, demand and supply, stocks and production capacities.

7. Ministers note that a stable future of the international energy sector requires significant investment in the production, transportation and processing of energy resources. We recognize that to attract investment it is essential for countries to have open and favourable investment regimes including stable and predictable regulations, clear tax laws, and efficient administrative procedures as well as fair and reciprocal access to markets along the energy value chain.

8. Ministers favour the implementation of the Action plan adopted last year by our leaders in Gleneagles which includes a wide range of measures to promote innovations, increase energy efficiency and enhance environmental protection.

9. Ministers proceed from the fact that diversification of the energy portfolio in terms of energy sources, suppliers and consumers as well as delivery methods and routes will reduce energy security risks not only for individual countries but for the entire international community. Joint efforts of the G8 and other countries aimed at wider use of renewable and alternative energies, development and implementation of innovative energy technologies and development of low-carbon energy would contribute substantially to the solution of this strategic task. For those countries that wish, wide-scale development of safe and secure nuclear energy is crucial for long-term environmentally sustainable diversification of energy supply.

10. Ministers agree that continued international cooperation to develop the low carbon technologies of the future will be crucial. Facilitating development and deployment of innovative energy technology solutions will have longer term environmental, economic and energy security benefits and be key to a global sustainable energy future.

11. A significant reduction of the gap in energy supply between developed and undersupplied less-developed countries is a major aspect of global energy security.

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The UN Department of Economic and Social Affairs' Division for Sustainable Development independently published a report by PESD director David Victor on sustainable energy services for the poor. The motto for UNDESA's Division for Sustainable Development is "Development that meets the needs of the present without compromising the ability of future generations to meet their own needs." The report is part of PESD's research on Low Income Energy Services and can be downloaded in its entirety below.

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David G. Victor
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Victor's opinion piece supports India's move toward nuclear power as a means of meeting an ever increasing, economically-driven demand for electricity and displacing coal - the most carbon intensive of all fossil fuels-as the primary source of energy. However, care is still needed to tame the risks of proliferation and efforts need to be made to improve India's electricity sector.

Stanford, California - If the deal to supply India with nuclear technologies goes through, future generations may remember it for quite different reasons than the debate over nuclear proliferation.

Nuclear power emits no carbon dioxide, the leading cause of global warming. And India, like most developing countries, has not been anxious to spend money to control its emissions of this and other so- called greenhouse gases.

India is embracing nuclear power for other reasons - because it can help the country solve its chronic failure to supply the electricity needed for a burgeoning economy. But in effect, the deal would marry their interest in power with ours in protecting the planet.

India is growing rapidly. In recent years its economy has swelled at more than 7 percent per year, and many analysts believe it is poised to grow even faster in the coming decade.

The economic growth is feeding a voracious appetite for electricity that India's bankrupt utilities are unable to satisfy. Blackouts are commonplace. Farmers, who account for about two-fifths of all the power consumed, can barely rely on getting power for half of every day. In industrial zones, the lifeblood of India's vibrant economy, unstable power supplies are such trouble that the biggest companies usually build their own power plants.

So most analysts expect that the demand for electricity will rise at about 10 percent a year. (For comparison, U.S. power demand notches up at just 2 percent annually.)

Over the past decade, about one third of India's new power supplies came from natural gas and hydro electricity. Both those sources have been good news for global warming - natural gas is the least carbon- intensive of all the fossil fuels, and most of India's hydroelectric dams probably emit almost no greenhouse gases.

However, the bloom is coming off those greenhouse-friendly roses. New supplies of natural gas cost about twice what Indians are used to paying, and environmental objections are likely to scupper the government's grand plans for new hydro dams.

That leaves coal - the most carbon-intensive of all fossil fuels. Already more than half of India's new power supplies come from coal, and that could grow rapidly.

Traditionally, the coal sector was plagued by inefficiencies. State coal mines were notoriously dangerous and inefficient. Coal-fired plants in western provinces, far from the coal fields and vulnerable to the dysfunctional rail network, often came within days of shutting operations due to lack of coal.

All that is changing. Private and highly efficient coal mines are grabbing growing shares of the coal market. Upgrades to the nation's high-tension power grid is making it feasible to generate electricity with new plants installed right at the coal mines.

These improvements make coal the fuel to beat.

So the deal struck with President George W. Bush matters. At the moment, India has just 3 gigawatts of nuclear plants connected to the grid. Government planners envision that nuclear supply will grow to 30 GW over the next generation, but that will remain a fantasy without access to advanced nuclear technologies and, especially, nuclear fuels - such as those offered under the deal with the Bush administration.

By 2020, even after discounting for the government's normal exuberance in its forecasts, a fresh start for nuclear power could increase nuclear generating capacity nearly ten-fold.

By displacing coal, that would avoid about 130 million tons of carbon dioxide per year (for comparison, the full range of emission cuts planned by the European Union under the Kyoto Protocol will total just 200 million tons per year).

The effort, if successful, would eclipse the scheme under the Kyoto Protocol, known as the Clean Development Mechanism, that was designed to reward developing countries that implement projects to reduce their emissions of greenhouse gases. The largest 100 of these CDM projects, in total, won't reduce emissions as much as a successful effort to help India embrace safe nuclear power.

The benefits in slowing global warming are not enough to make the deal a winner. Care is needed to tame the risks of proliferation, especially those connected from India's system of breeder reactors that make more weapons-capable fuel than they consume. And complementary efforts, led by Indians, are needed to fix the trouble in India's electricity sector that have so far discouraged private investors.

None of this will be easy. There are no silver bullets in cooling the greenhouse.

What is important is that the deal is not just a one-off venture, as the administration's backers, on the defensive, have suggested. It could frame a new approach to technology sharing and managing a more proliferation proof fuel cycle that, in turn, will multiply the benefits of a cooler climate.

Coal-rich China is among the many other countries that would welcome more nuclear power and whose emissions of carbon dioxide are growing fast - even faster than India's.

Quite accidentally, it seems, the Bush administration has stumbled on part of an effective strategy to slow global warming. Now it should marry that clever scheme overseas with an effective plan here at home.

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This pilot course on international environmental issues is a collaboration among faculty and students at Stanford and three universities in Africa - the University of the Western Cape in South Africa, Mweka College of African Wildlife Management in Tanzania and Makerere University in Uganda. The course offers students the opportunity to learn from leading experts in environmental sciences from several countries and to debate issues through Internet and mobile technology interactions.

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Co-author CESP senior fellow Harold A. Mooney details the dangerous impacts nitrogen-rich chemical fertilizers can have on the atmosphere and important watersheds. He asserts "the use of organic versus chemical fertilizers can play a role in reducing these adverse effects."

Organic farming has long been touted as an environmentally friendly alternative to conventional agriculture. A new study in the Proceedings of the National Academy of Sciences (PNAS) provides strong evidence to support that claim.

Writing in the March 6 online edition of PNAS, Stanford University graduate student Sasha B. Kramer and her colleagues found that fertilizing apple trees with synthetic chemicals produced more adverse environmental effects than feeding them with organic manure or alfalfa.

"The intensification of agricultural production over the past 60 years and the subsequent increase in global nitrogen inputs have resulted in substantial nitrogen pollution and ecological damage," Kramer and her colleagues write. "The primary source of nitrogen pollution comes from nitrogen-based agricultural fertilizers, whose use is forecasted to double or almost triple by 2050."

Nitrogen compounds from fertilizer can enter the atmosphere and contribute to global warming, adds Harold A. Mooney, the Paul S. Achilles Professor of Environmental Biology at Stanford and co-author of the study.

"Nitrogen compounds also enter our watersheds and have effects quite distant from the fields in which they are applied, as for example in contaminating water tables and causing biological dead zones at the mouths of major rivers," he says. "This study shows that the use of organic versus chemical fertilizers can play a role in reducing these adverse effects."

Nitrogen treatments

The PNAS study was conducted in an established apple orchard on a 4-acre site in the Yakima Valley of central Washington, one of the premiere apple-growing regions in the United States. Some trees used in the experiment had been raised with conventional synthetic fertilizers. Others were grown organically without pesticides, herbicides or artificial fertilization. A third group was raised by a method called integrated farming, which combines organic and conventional agricultural techniques.

"Conventional agriculture has made tremendous improvements in crop yield but at large costs to the environment," the authors write. "In response to environmental concerns, organic agriculture has become an increasingly popular option."

During the yearlong experiment, organically grown trees were fed either composted chicken manure or alfalfa meal, while conventionally raised plants were given calcium nitrate, a synthetic fertilizer widely used by commercial apple growers. Trees raised using the integrated system were given a blend of equal parts chicken manure and calcium nitrate.

Each tree was fertilized twice, in October and May, and given the same amount of nitrogen at both feedings no matter what the source-alfalfa, chicken manure, calcium nitrate or the manure/calcium nitrate blend.

Groundwater contamination

One goal of the PNAS experiment was to compare how much excess nitrogen leached into the soil using the four fertilizer treatments-one conventional, two organic (manure and alfalfa) and one integrated. When applied to the soil, nitrogen fertilizers release or break down into nitrates-chemical compounds that plants need to build proteins. However, excess nitrates can percolate through the soil and contaminate surface and groundwater supplies.

Besides having detrimental impacts on aquatic life, high nitrate levels in drinking water can cause serious illness in humans, particularly small children. According to the PNAS study, nearly one in 10 domestic wells in the United States sampled between 1993 and 2000 had nitrate concentrations that exceeded the Environmental Protection Agency's drinking water standards.

To measure nitrate levels during the experiment, water was collected in resin bags buried about 40 inches below the trees and then analyzed in the laboratory. The results were dramatic. "We measured nitrate leaching over an entire year and found that it was 4.4 to 5.6 times higher in the conventional treatment than in the two organic treatments, with the integrated treatment in between," says John B. Reganold, the Regents Professor of Soil Science at Washington State University and co-author of the study.

Nitrogen gas emissions

The research team also compared the amount of nitrogen gas that was released into the atmosphere by the four treatments. Air samples collected in the orchard after the fall and spring fertilizations revealed that organic and integrated soils emitted larger quantities of an environmentally benign gas called dinitrogen (N2) than soils treated with conventional synthetic fertilizer. One explanation for this disparity is that the organic and integrated soils contained active concentrations of denitrifying bacteria-naturally occurring microbes that convert excess nitrates in the soil into N2 gas. However, denitrifier microbial communities were much smaller and far less active and efficient in conventionally treated soils.

The research team also measured emissions of nitrous oxide (N2O)-a potent greenhouse gas that is 300 times more effective at heating the atmosphere than carbon dioxide gas, the leading cause of global warming. The results showed that nitrous oxide emissions were similar among the four treatments.

"We found that higher gas emissions from organic and integrated soils do not result in increased production of harmful nitrous oxide but rather enhanced emission of non-detrimental dinitrogen," Reganold says. "These results demonstrate that organic and integrated fertilization practices support more active and efficient denitrifier microbial communities, which may shift some of the potential nitrate leaching losses in the soil into harmless dinitrogen gas losses in the atmosphere."

Sustainable agriculture

Washington state produces more than half of the nation's apples. In 2004, the state crop was worth about $963 million, with organically grown apples representing between 5 and 10 percent of the total value. But the results of the PNAS study may apply to other high-value crops as well, according to the authors.

"This study is an important contribution to the debate surrounding the sustainability of organic agriculture, one of the most contentious topics in agricultural science worldwide," Reganold says. "Our findings not only score another beneficial point for organic agriculture but give credibility to the middle-ground approach of integrated farming, which uses both organic and conventional nitrogen fertilizers and other practices. It is this middle-ground approach that we may see more farmers adopting than even the rapidly growing organic approach."

Adds Mooney, "Organic farming cannot provide for all of our food needs, but it is certainly one important tool for use in our striving for sustainable agricultural systems. We need to explore and utilize all possible agricultural management techniques and technologies to reduce the very large global footprint of the needs to feed a population of over 6 billion people."

Other co-authors of the PNAS study are agroecologist Jerry D. Glover of the Land Institute in Salina, Kan., and Brendan J. M. Bohannan, associate professor of biological sciences at Stanford.

The study was funded by the U.S. Department of Agriculture, the National Science Foundation, the Land Institute and the Teresa Heinz Environmental Science and Policy Fellowship Program.

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This series is part of the Stanford course, "Earth System 105".

Co-sponsored with Stanford School of Earth Sciences, Woods Institute for the Environment, and Stanford Continuing Studies.

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Pamela A. Matson Dean of the School of Earth Sciences, Goldman Professor of Geological and Environmental Sciences and FSI Senior Fellow Moderator Stanford University
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Burt and Deedee McMurtry Professor of Engineering
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Dr. M. Elisabeth Paté-Cornell was born in Dakar, Senegal. Her academic degrees are in mathematics and physics (BS, Marseilles, France, 1968), applied mathematics and computer science (MS and Engineer Degree, Institut Polytechnique de Grenoble, France, 1970; 1971), operations research (MS, Stanford, 1972), and engineering-economic systems (Stanford, PhD, 1978). She was an Assistant Professor of Civil Engineering at MIT (1978 to 1981). In 1981, she joined the Stanford Department of Industrial Engineering and Engineering Management, where she became Professor (1991), then Chair (1997). In 1999, she was named the Burt and Deedee McMurtry Professor in the Stanford School of Engineering. She oversaw from 1999, the merger of two Stanford departments to form a new department of Management Science and Engineering, which she chaired from January 2000 to June 2011. She is a Senior Fellow (by courtesy) of the Stanford Freeman Spogli Institute for International Studies. She joined CISAC as an affiliated faculty member in September 2011.

She was elected to the National Academy of Engineering in 1995, to its Council (2001-2007), and to the French Académie des Technologies (2003). She was a member of the President’s Intelligence Advisory Board (2001-2004; 2006-2008). Her current memberships include the Boards of Trustees of the Aerospace Corp. (2004-), of InQtel (2006-) and of Draper Corporation (2009-). She is a member of the Board of Advisors of the Naval Postgraduate School, which she chaired from 2004 to 2006.

She is a world leader in engineering risk analysis and management and more generally, the use of Bayesian probability to process incomplete information. Her research and that of her Engineering Risk Research Group at Stanford have focused on the inclusion of technical and management factors in probabilistic risk analysis models with applications to the NASA shuttle tiles, offshore oil platforms and medical systems. Since 2001, she has combined risk analysis and game analysis to assess intelligence information and risks of terrorist attacks.

She is past president (1995)/fellow of the Society for Risk Analysis, and fellow of the Institute for Operations Research and Management Science. She has been a consultant to many industrial firms and government organizations. She has authored or co-authored more than a hundred papers in refereed journals and conference proceedings. She has received several best-paper awards from professional organizations and peer-reviewed journals.

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Dr. Luiz Martinelli (Brazil) is an associate professor at the University of São Paulo in Brazil. His research into the ecology and geochemistry of the Amazon Basin has earned him recognition as one of Brazil's leading scientists in his field. In addition to publishing numerous papers in scientific journals, Dr. Martinelli has worked with both the International Geosphere-Biosphere Program and the Scientific Committee on Problems of the Environment.

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Jennifer (“Jenna”) Davis is a Professor in the Department of Civil and Environmental Engineering and the Higgins-Magid Senior Fellow at the Woods Institute for the Environment, both of Stanford University. She also heads the Stanford Program on Water, Health & Development. Professor Davis’ research and teaching is focused at the interface of engineered water supply and sanitation systems and their users, particularly in developing countries. She has conducted field research in more than 20 countries, including most recently Zambia, Bangladesh, and Uganda.

Higgins-Magid Faculty Senior Fellow, Stanford Woods Institute for the Environment
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