Who dinosaured Michael Crichton? Was it a comet or just the responsibility of being America's prophet of doom? In his new book, State of Fear, Crichton once again ascends to the pulpit to warn us of an impending horror. Like the diabolical Japanese businessmen in Rising Sun and the corporate vixen in Disclosure, these new shadowy forces, Crichton says, lurk among us, poised to wreak havoc. They're among America's fiercest enemies. They're … environmentalists. State of Fear is a 600-page tirade about global warming. Crichton thinks environmentalists have become overheated about the threat and have substituted demagoguery for hard science....