Original sentence: In 1997, the conservative advocacy group Citizens for a Sound Economy surveyed America's 48 official state climatologists on questions related to  climate change
Edited sentence: In 1997, right wing think tank Citizens for a Sound Economy surveyed America's 48 official state climatologists on questions related to  climate change.This group explicitly talks down the existence of global warming, and hence there is some indication that its ideological predispositions biased its survey