"The last 50 years stick out like a sore thumb... The temperature's gone up and up and up. It bears the imprint of human activity."

--Dr. Michael Oppenheimer, Professor of Geosciences and International Affairs, Princeton University

"It's not something we can adapt to...we can't let it go another 10 years like this."

--Dr. James Hansen, Director NASA Goddard Institute for Space Studies, member National Academy of Sciences

"The weight of evidence for climate change is very strong indeed, and it has gotten stronger over the years...The rate of warming is now greater than it has been for 10,000 years; that means the rate of climate change is greater than it has been for 10,000 years."

--Sir John Houghton, Professor in atmospheric physics, University of Oxford, recipient of Royal Astronomical Society Gold Medal, Honorary Member American Meteorological Society  read more »