I'm quite sure that we add to the global warming problem. There are lots of observations indicating this. But of course the big corporations will deny this since it would mean less profits for them. And I'd recommend everyone "
An inconvenient truth" from Al Gore. Whether or not you like the guy personally, he has a lot of good arguments and evidence that supports his claims.
Michael Chrichton ("
State of Fear") on the other hand seems to have a personal grudge against scientists who are finding ever more evidence for global warming. I dunno why though. I also think he's not as good as he was. His recent thriller about genes ("
Next") isn't terribly good either. Maybe he had peaked a few years ago as a writer.