The source provided misrepresents the (
Cook et al. 2013) paper. Here is what they said:
"In an analysis of 12,000 abstracts, he found “a 97% consensus among papers taking a position on the cause of global warming in the peer-reviewed literature that humans are responsible.” “Among papers taking a position” is a significant qualifier: Only 34 percent of the papers Cook examined expressed any opinion about anthropogenic climate change at all. Since 33 percent appeared to endorse anthropogenic climate change, he divided 33 by 34 and — voilà — 97 percent!"
At face value the statement looks legitimate, however, it is ignoring an extremely important factor. So what's the problem? Here's what they are implying:
- In an analysis of 12,000 abstracts, he found “a 97% consensus among papers taking a position on the cause of global warming in the peer-reviewed literature that humans are responsible
- Cook divided the 33% by 34% and — voilà — 97 percent! Thus, Cook is ignoring the other 66% is implied.
Here's the problem. In the first statement they imply that Cook says 97% of the 12,000 abstracts took the position of AGW. Cook et al, did no such thing. Cook et at, took the terms "global climate change" and "global warming" to locate paper that would indicate papers pertaining to those subjects in a scientific search engine. Of those search criteria only 12,000 (actually 11,944) matched the search. Your source did acknowledge that only 33% did match that criteria, but then they follow with the implied "statement 33% by 34% and — voilà — 97 percent!" It is easily overlooked at face value, especially when the source is well know for its AGW denial position and those sourcing it are hearing what they want to hear.
Yes 33 divided by 34 yields a percentile of 97%, and that is correct. Only 33% of the original 12,000 had anything to say about AGW. It would be an enormous error to include that 66% when they not only had absolutely no position on AGW, but that 66% of papers didn't even address the subject. Most published research in climatology has nothing to do with AGW, rather Paleoclimatology (past climates) and related areas.