After seeing wind power cost coal about $900 million last year, it isn't difficult to understand why coal is waging a war on science. Peabody Energy, which claims greenhouse gases are a "nonexistent harm", is a perfect example of this. As proof of their war on science, take a look at the 71-page document they submitted to the White House's Council on Environmental Quality. It contains 304 footnote citations. Of those, 41 come from editorials and 64 come from fossil-fuel funded institutes. That is more than 1/3rd of the total number of citations. Peer-reviewed scientific articles make up only 8% of the citations.
Along these lines, I have heard many deniers quote some of the Peabody claims, even stating they are 'skeptics,' not 'deniers.' Take a look here for a comparison of the two. I'll still be calling them 'deniers.'