Climate change is already having a major effect on water and land resources, agriculture and biodiversity, according to a report released yesterday by the U.S. Climate Change Science Program, which is led by the U.S. Department of Agriculture. The study is a detailed scientific examination of the impact of climate change on the nation's ecosystems--including forests, farmland and wildlife--and the continuing trend in rising sea levels and changes in temperature and precipitation in the next 25 to 50 years. In related news, ExxonMobil has announced it will discontinue funding for lobby and policy groups that deny the science behind climate change.

Public Agenda's latest Confidence in U.S. Foreign Policy Index shows 72 percent of Americans worry about global warming, with 39 percent who worry "a lot." Yet 58 percent give the U.S. a grade of C or worse for working with other countries to reduce global warming. Still, 61 percent say it's "realistic" to believe that international cooperation can reduce global warming.