A new issue brief by Scott Rozelle and fellow researchers Jinxia Wang and Jikun Huang concludes that climate change will have a significant effect on China's crop yields and impact its economy, including the grain trade. It concludes that China's government is responsible for responding in ways that will help the country adapt to and mitigate the effects of climate change. The issue brief was jointly published by the International Centre for Trade and Sustainable Development and the International Food and Agricultural Trade Policy Council.

The heat wave in Russia has captured international media attention, breaking temperature records left and right. It has also captured the attention of commodity traders. You see, in a typical year Russia produces about as much wheat as the United States, and is among the top exporters of wheat flour in the world. But this year, wheat has been decimated in the areas around Moscow, with yield expected to be 30 percent or so below normal. This week Russia announced they are banning all exports of wheat from August 15 through the end of the year. Since late June, wheat prices on the Chicago Board of Trade have risen by 50 percent, to more than $7 a bushel.

It is, and always will be, impossible to say whether a single event is caused by climate change. But we can ask, is this the type of thing we expect to be more common? In terms of warming, we can say with little doubt that heat waves like this will become more common with global warming. Exactly how much more common is tough to say, but it is likely that the average summer in 2050 will be as warm as the warmest summer in the 20th century. I am not aware of anyone who has done the calculation of exactly how common the type of heat experienced this year will be, but based on projections in the UN Intergovernmental Panel on Climate Change (IPCC) reports one can suspect this type of heat wave will be relatively common in Russia in a few decades.

Kate Marvel has been named the second annual Perry Fellow for the 2010-2011 academic year.

The Perry Fellowship honors an early or mid-career researcher from the United States or abroad with a record of "outstanding work in natural science, engineering or mathematics...who is dedicated to solving international security problems." Marvel, 29, will spend the year at CISAC conducting research on two projects, Understanding the Regional Consequences of Global Climate Change and Game Changers for Nuclear Energy.

"I'm very honored to be recognized," said Marvel, "but truly all of my colleagues would be deserving of this fellowship. I look forward to working with them as my research progresses over the next year."

Marvel spent the past year at CISAC as a postdoctoral fellow after studying at the University of Cambridge where she received her PhD in applied mathematics and theoretical physics. In addition to researching her project, Modeling Distributed Electric Grids, Marvel co-chaired CISAC's weekly Thursday research seminar with Lynn Eden.

Marvel holds a BA in physics and astronomy from the University of California at Berkeley and has worked at Lawrence Berkeley Laboratory, California, and the African Institute for Mathematical Sciences in South Africa.   She is active in outreach work and has lectured in settings as diverse as a community center in Lesotho, a physics institute in Tehran, and the Secret Garden Party Festival in the UK.

William J. Perry and the Perry Fellowship
Perry earned bachelor's and master's degrees in mathematics from Stanford in 1949 and 1950, and a doctorate from Pennsylvania State University. He went on to found the Silicon Valley electronics company ESL, build a venture capital company and pursue a distinguished career in public service. At the heart of Perry's work is a commitment to bring the rigors of science to international security issues. The William J. Perry Fellow in International Security at Stanford University will pursue this commitment.