To predict how agriculture will be affected by future climate change, scientists often rely on a single crop model – a computer simulation of how a specific crop’s yield responds to temperature changes. By combining 30 such models into a single study, and comparing each model against data from existing experimental wheat fields around the world, a team of researchers including Stanford professor David Lobell have developed a more powerful and accurate way to predict future wheat yields.

In a new analysis published in Nature Climate Change, the team’s results support previous work suggesting that wheat yields around the world are sensitive to rising temperatures. Using the new method of analysis, the team estimates an average six percent future yield loss for every one degree Celsius rise in global mean temperature.

“Combining 30 models gives us a much greater ability to predict future impacts and understand past impacts,” said Lobell. “This is a clear step forward.”

Lobell is professor of environmental earth system science in the School of Earth Science at Stanford and the deputy director of the Center on Food Security and the Environment. He is a senior fellow at the Stanford Woods Institute for the Environment and at the Freeman Spogli Institute for International Studies.

The estimated six percent yield loss for every degree increase is equivalent to about a quarter of the current volume of wheat traded globally in 2013. Yields at some sites, notably those in Mexico, Brazil, India and Sudan, show simulated wheat yield losses of more than 20 percent - in Sudan’s case, more than 50 percent - under a scenario in which global mean temperature rises by two degrees Celsius.

With higher temperatures also comes an increase in the variability of wheat yields, both by location and between years. More fluctuation in wheat yields could mean greater global price volatility for the staple crop.

Approximately 70 percent of the wheat produced today is grown either on irrigated plots or in rainy regions. The research team accounted for this factor by focusing its simulations on multiple regional-specific varieties of wheat that are commonly grown under these conditions.

The new paper includes several suggestions for avoiding some of the predicted yield losses. For example, some varieties of wheat are more heat tolerant than others, and farmers in the places hardest hit by rising temperatures could switch varieties to capitalize on this heat resistance. The effects of rising temperatures could also be managed, in part, by adjusting sowing and harvesting dates, or changing the way fertilizers are applied to crops.

Contact: David Lobell, dlobell@stanford.edu

In a recent speech, Stanford professor Rosamond Naylor examined the wide range of challenges contributing to global food insecurity, which Naylor defined as a lack of plentiful, nutritious and affordable food. Naylor's lecture, titled "Feeding the World in the 21st Century," was part of the quarterly Earth Matters series sponsored by Stanford Continuing Studies and the Stanford School of Earth Sciences. Naylor, a professor of Environmental Earth System Science and director of the Center on Food Security and the Environment at Stanford, is also a professor (by courtesy) of Economics, and the William Wrigley Senior Fellow at the Freeman Spogli Institute for International Studies and the Stanford Woods Institute for the Environment.

"One billion people go to bed day in and day out with chronic hunger," said Naylor. The problem of food insecurity, she explained, goes far beyond food supply. "We produce enough calories, just with cereal crops alone, to feed everyone on the planet," she said. Rather, food insecurity arises from a complex and interactive set of factors including poverty, malnutrition, disease, conflict, poor governance and volatile prices. Food supply depends on limited natural resources including water and energy, and food accessibility depends on government policies about land rights, biofuels, and food subsidies. Often, said Naylor, food policies in one country can impact food security in other parts of the world. Solutions to global hunger must account for this complexity, and for the "evolving" nature of food security.

As an example of this evolution, Naylor pointed to the success of China and India in reducing hunger rates from 70 percent to 15 percent within a single generation. Economic growth was key, as was the "Green Revolution," a series of advances in plant breeding, irrigation and agricultural technology that led to a doubling of global cereal crop production between 1970 and 2010. But Naylor warned that the success of the Green Revolution can lead to complacency about present-day food security challenges. China, for example, sharply reduced hunger as it underwent rapid economic growth, but now faces what Naylor described as a "second food security challenge" of micronutrient deficiency. Anemia, which is caused by a lack of dietary iron and which Naylor said is common in many rural areas of China, can permanently damage children's cognitive development and school performance, and eventually impede a country’s economic growth.

Hunger knows no boundaries

Although hunger is more prevalent in the developing world, food insecurity knows no geographic boundaries, said Naylor. Every country, including wealthy economies like the United States, struggles with problems of food availability, access, and nutrition. "Rather than think of this as 'their problem' that we don't need to deal with, really it's our problem too," Naylor said.

She pointed out that one in five children in the United States is chronically hungry, and 50 million Americans receive government food assistance. Many more millions go to soup kitchens every night, she added. "We are in a precarious position with our own food security, with big implications for public health and educational attainment," Naylor said. A major paradox of the United States' food security challenge is that hunger increasingly coexists with obesity. For the poorest Americans, cheap food offers abundant calories but low nutritional value. To improve the health and food security of millions of Americans, "linking policy in a way that can enhance the incomes of the poorest is really important, and it's the hard part,” she said.” It's not easy to fix the inequality issue."

Success stories

When asked whether there were any "easy" decisions that the global community can agree to, Naylor responded, "What we need to do for a lot of these issues is pretty clear, but how we get after it is not always agreed upon." She added, "But I think we've seen quite a few success stories," including the growing research on climate resilient crops, new scientific tools such as plant genetics, improved modeling techniques for water and irrigation systems, and better knowledge about how to use fertilizer more efficiently. She also said that the growing body of agriculture-focused climate research was encouraging, and that Stanford is a leader on this front.

Naylor is the editor and co-author of The Evolving Sphere of Food Security, a new book from Oxford University Press. The book features a team of 19 faculty authors from 5 Stanford schools including Earth science, economics, law, engineering, medicine, political science, international relations, and biology. The all-Stanford lineup was intentional, Naylor said, because the university is committed to interdisciplinary research that addresses complex global issues like food security, and because "agriculture is incredibly dominated by policy, and Stanford has a long history of dealing with some of these policy elements. This is the glue that enables us to answer really challenging questions." 

The Europe Center Graduate Student Grant Competition

Call for Proposals:

The Europe Center is pleased to announce the Fall 2014 Graduate Student Grant Competition for graduate and professional students at Stanford whose research or work focuses on Europe. Funds are available for Ph.D. candidates from across a wide range of disciplines in the humanities and social sciences to prepare for dissertation research and to conduct research on approved dissertation projects. The Europe Center also supports early graduate students who wish to determine the feasibility of a dissertation topic or acquire training relevant for that topic. Moreover, funds are available for professional students whose interests focus on some aspect of European politics, economics, history, or culture; the latter may be used to support an internship or a research project. Grants range from $500 to $5000.

Additional information about the grants, as well as the online application form, can be found here.  The deadline for this Fall’s competition is Friday, October 17th. Recipients will be notified by November 7th. A second competition is scheduled for Spring 2015.
 

Highlights from 2013-2014:

In the 2013-2014 academic year, the Center awarded grants to 26 graduate students in departments ranging from Linguistics to Political Science to Anthropology. We would like to introduce you to some of the students that we support and the projects on which they are working. Our featured students this month are Michela Giorcelli (Economics) and Orysia Kulick (History).

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Undergraduate Internship Program: Highlights

The Europe Center sponsored four undergraduate student internships with leading think tanks and international organizations in Europe in Summer 2014.  Laura Conigliaro (International Relations, 2015) joined the Centre for European Policy Studies (CEPS), while Elsa Brown (Political Science, 2015), Noah Garcia (BA International Relations and MA Public Policy, 2015), and Jana Persky (Public Policy, 2016) joined Bruegel, a leading European think tank. Our featured student this month is Laura Conigliaro.

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Recap:  Panel on Europe-Russia Relations and EU expansion

On September 30, 2014, Miroslav Lajčák, the Deputy Prime Minister and the Minister of Foreign and European Affairs of the Slovak Republic, participated in a panel discussion in which he shared his thoughts and opinions about Europe’s relationship with Russia, and about the E.U.’s management of its future membership and associations. The Minister’s viewpoints were of particular interest, given his role in the E.U. foreign policy establishment, and the Slovak Republic’s role in the E.U. and NATO.

“The fact is that E.U.-Russia relations have worsened dramatically. That cannot be denied. But it’s not E.U. enlargement that played a major role in this.”  According to the Minister, Russia did not view E.U. enlargement with hostility, in part, because enlargement remained a transparent process. “But it all changed when Europe decided to enter into Russia’s immediate neighborhood...the former Soviet Republics. And this was something that

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Minister Lajčák’s brought a variety of experiences to the panel. He served as the European Union Chief Negotiator for the E.U.-Ukraine and E.U.-Moldova Association Agreements, and was the European Union Special Representative for Bosnia and Herzegovina, and Sarajevo. Additionally, he was previously the Ambassador of the Slovak Republic to the Former Republic of Yugoslavia, Albania and the Former Yugoslav Republic of Macedonia. 

After Minister Lajčák spoke, he was followed by comments by Michael McFaul, Professor of Political Science and Senior Fellow, Hoover Institute and Freeman Spogli Institute; Norman Naimark, the Robert and Florence McDonnell Professor in East European Studies in the History Department and The Director of Stanford Global Studies; and Kathryn Stoner, Senior Fellow at the Freeman Spogli Institute and Faculty Director of the Susan Ford Dorsey Program in International Studies.

Introducing “Immigration and Integration in Europe” Policy Lab

The Europe Center would like to introduce a new research project entitled, “Immigration and Integration in Europe:  A Public Policy Perspective,” led by Professors David Laitin and Jens Hainmueller. Duncan Lawrence has recently joined Stanford University to help direct the project. The project is part of the new Policy Implementation Lab at the Freeman Spogli Institute for International Studies.

The social and economic integration of its diverse and ever growing immigrant populations is one of the most fundamental and pressing policy issues European countries face today. Success or failure in integrating immigrants is likely to have a substantial effect on the ability of European countries individually and collectively as members of the European Union to achieve objectives ranging from the profound such as sustaining a robust democratic culture to the necessary such as fostering economic cooperation between countries. Various policies have been devised to address this grave political dilemma, but despite heated public debates we know very little about whether these policies achieve their stated goals and actually foster the integration of immigrants into the host societies. (Inset: David Laitin)

The goal of this research program is to fill this gap and create a network of leading immigration scholars in the US and Europe to generate rigorous evidence about what works and what does not when it comes to integration policies. The methodological core of the lab’s research program is a focus on systematic impact evaluations that leverage experimental and quasi-experimental methods with common study protocols to quantify the social and economic returns to integration policies across Europe, including polices for public housing, education, citizenship acquisition, and integration contracts for newcomers. This work will add to the quality of informed public debate on a sensitive issue, and create cumulative knowledge about policies that will be broadly relevant. (Inset: Jens Hainmueller)

The Europe Center Sponsored Events

We invite you to attend the following events sponsored or co-sponsored by The Europe Center:

Additional Details on our website
October 8-10, 2014
“War, Revolution and Freedom: the Baltic Countries in the 20th Century”
Stauffer Auditorium, Hoover Institution
9:00 AM onward

Save the Date
April 24-25, 2015
Conference on Human Rights

A collaborative effort between the International Human Rights and Conflict Resolution Clinic at Stanford Law School (IHRCRC), the Research Center for Human Rights at Vienna University (RCHR), and The Europe Center. The conference will focus on the pedagogy and practice of human rights. 

Save the Date
May 20-22, 2015
TEC Lectureship on Europe and the World 
Joel Mokyr
Robert H. Strotz Professor of Arts and Sciences, and Professor of Economics and History, Northwestern University

We welcome you to visit our website for additional details.

Seeds of Sustainability tackles a central challenge of sustainable development: agricultural modernization. It is cutting edge not because the issue itself is new, but rather the level of integration the authors attempted and the innovative process they used. The volume summarizes the findings and reflects on the process of a highly interdisciplinary team of researchers, integrating perspectives from: biogeochemistry, atmospheric sciences, land-use change, institutions, agronomy, economics, and knowledge systems. The foundation of the work is rigorous, grounding its findings in multiple peer reviewed publications, while not hesitating to point out gaps or unresolved issues. Seeds of Sustainability includes an in depth historical analysis, which captures issues of path dependence. It demonstrates both originality and critical reflectiveness in its efforts to engage practitioners in the conceptualization and execution of its research, and the implementation of its findings. And almost uniquely in our collective experience, it speaks seriously, frankly, and insightfully to the challenges of institutionalizing the sort of work it reports on.