As food and energy commodity prices surged in late 2007 and most of 2008, there was a renewed interest in updated estimates of the impact of these increases on retail food prices. The drop in commodity prices (September 2008- March 2009) leads to the same set of questions in the opposite...

Research suggests that in the short run, the production, distribution, and consumption of ethanol will create about 20 percent fewer greenhouse-gas emissions than the equivalent processes for gasoline. In the long run, the result is less clear. If increases in the production of ethanol led to a...