Media Matters for America has a great writeup on this. It is all about false balance. Fox is great at that.

Coleman’s experience in weather forecasting does not make him an expert in climate science — there is an immense difference between a scientist and a weather forecaster. … Disregarding the fact that Coleman never received a formal education in meteorology — his degree was in journalism — his experience predicting the weather does not make him a credible source to debunk the vast majority of scientific literature on climate change.

Coleman also claimed that “9,000 Ph.D.’s and 31 [thousand] scientists” agree with his position on climate change, referring to the widely discredited Oregon Petition Project. Its signatories are mostly engineers with master’s degrees, and it once included the names of fictitious characters and a member of the Spice Girls.

Coleman is not a climate scientist. Neither is Al Gore, actually. But one of them is seriously concerned about climate change and does listen to what climate scientists day. Guess which one.