NY Times 
March 20, 2010
Apocalyptic visions and the muscular language of religious fervor are invading the climate arena, replacing issues of fact with those of faith and bringing high emotion into science — an area where it should have no place — politicians and religious leaders complain.
People who say human-induced climate change is a fact that demands urgent action are described as “believers” or “climate evangelists,” while those who reject the concept are “deniers,” “skeptics” or “atheists.” Those in the middle who say they are unconvinced either way are “agnostics.”
“The use of this language has become increasingly an issue,” said Colin Challen, chairman of the United Kingdom’s All Party Parliamentary Climate Change Group, a committee of U.K. lawmakers studying the global climate phenomenon.
“Some people would like that to happen, because in some eyes proving that climate change is man-made becomes as difficult as proving the existence of God,” he told E&E.