Many people write sensible things about anthropogenic global warming, but I find Professor William Happer's statement to the US Senate on February 25, 2009, especially clear and convincing .Happer is the Cyrus Fogg Bracket Professor of Physics at Princeton University.  He was also the Director of Energy Research at DOE from 1990-93, where he supervised all of DOE's work on climate change.  He says this:"The climate is warming and CO2 is increasing. Doesn't this prove that CO2 is causing global warming through the greenhouse effect? No, the current warming period began about 1800 at the end of the little ice age, long before there was an appreciable increase of CO2. There have been similar and even larger warmings several times in the 10,000 years since the end of the last ice age. These earlier warmings clearly had nothing to do with the combustion of fossil fuels. The current warming also seems to be due mostly to natural causes, not to increasing levels of carbon...(Read Full Post)