Goddamnit, CNN: you don't need to "cover" both sides of a "story" if one person is just disagreeing to disagree. Media Matters says:
CNN anchor Piers Morgan hosted a "debate" on climate science between Bill Nye "The Science Guy" and professional climate misinformer Marc Morano. As Morano spewed myths about climate change, CNN failed to disclose that he has no scientific training and is paid by an industry-funded organization.
Nye's opinion has more weight because he is working with facts. Just because Morano really believes what he's saying doesn't make his opinion worthwhile. If he had any real facts, he'd be worthy of the pedestal. As it is, CNN is just hurting the public discourse with this kind of irresponsible behavior.