Global warming's cooler heads How is any normal person supposed to make sense of the global warming debate? I don't blame you if you've given up. The trouble is, it's not a debate at all. It's a heavily politicized screaming match, with claims and counterclaims bombarding you from all directions. What can we do? And who the heck can we believe? If you're in this fix, Bjorn Lomborg is your man. The Danish environmentalist has just published an essential guide for the perplexed, called Cool It. He covers all the bases in language anyone can understand.