From Lawrence Lessig: Global Warming on a report from the U.S. Climate Change Science Program. Given the propensities of the Bush Administration to force scientific research to conform to their agenda, this is a welcome change.
At last, high-level Administration acknowledgment that global warming is real, and that human activity (mainly the burning of fossil fuels, principally oil, natural gas, and coal, and deforestation in Third World countries) is a principal cause because such activity emits carbon dioxide.