New evidence suggests that the current stew of airborne chemicals and particles might be giving clouds stronger cooling properties than previously thought. The new research appears in this week's issue of the journal Science. (University of Washington release)

The U. S. National Research Council reports that the conclusion of the Intergovernmental Panel on Climate Change on global warming accurately reflects the current thinking of the scientific community. The special study was requested by the Bush administration. (National Research Council release)

The conversion of forests to croplands in the midwestern United States over the last century has led to a measurable cooling of the region's climate. The new study is the first to document the link between regional climate change and a major change in temperate forest cover