Global warming debate heats up

WASHINGTON – While one NASA scientist says man-made catastrophic climate change will cause an apocalypse, another says hysterical pronouncements about carbon dioxide emissions are unwarranted and overblown.
...
Meanwhile, Spencer says his researchers have recently "stumbled upon clear and convincing observational evidence of particularly strong negative feedback (low climate sensitivity to carbon dioxide levels) from our best satellite instruments. That evidence includes our development of two new methods for extracting the feedback signal from either observational or climate model data, a goal which has been called the 'holy grail' of climate research."