In his State of the Union Address on Tuesday, U.S. President George W. Bush is expected to announce a shift in climate change policy and to call for significant increases in ethanol usage.

What are the implications for developing countries, where global climate change poses particular risks to poor farmers? What impact would increased use of biofuels have on food supplies?

Experts at the International Food Policy Research Institute (IFPRI) conduct research on these and related issues, and are available for comment. Recent IFPRI articles on the topics are featured in the box on the right.