Crichton drops in graphs and footnotes to buttress his contention that global warming isn't a real problem.
Wrong. Crichton drops in graphs and footnotes to buttress his conclusion that the evidence for global warming is a very, very great deal less sound than environmentalists think it is -- both as to whether it's occurring at all and as to whether human beings are contributing to it if it is occurring. He doesn't claim it isn't a real problem; he says that's an open question and it's way too early to get excited about it.
It would sure be nice if journalists covering this debate would get straight what the various parties do and don't claim.
He not only "drops" them in, he foot notes them. So, they are also very easy to confirm.