Michael Crichton’s scary movies, like “Jurassic Park,” have made billions. He has sold 100 million copies of his scary books. And now he’s telling us: Don’t be scared.

He almost didn’t write his latest book, “State of Fear.” “I’m 62 years old,” he told me. “I’ve had a good life. I’m happy. I’m enjoying myself. I don’t need any of the flak that would come from doing a book like this.”

Flak is coming because the fear Crichton is questioning is fear of global warming. And as Crichton told me, “people’s feelings about the environment are very close to religion.”

Global warming, of course, is not a faith that brings comfort. We interviewed people who seemed almost hysterical about it. One said, “Greenland is melting!” Another warned that “places like Los Angeles and New York will be underwater!” One person went even further off – should I say it? – the deep end: “I’m thinking it’s like the end of the world.”

It’s natural for people to worry because there’s been so much media hype. A U.S. News & World Report cover story claimed that within 50 years, the ocean “could” be checking in at the glamorous hotels of South Beach, Fla., while Vermonters “could” get malaria and Nebraska farms “could” be abandoned because of drought.

Crichton himself used to worry about global warming. But then he spent three years researching it. He concluded it’s just another foolish media-hyped scare. Many climate scientists agree with him, saying the effect of man and greenhouse gases is minor.

Many people believe the weather is already getting worse – that the earth is experiencing bigger storms than ever before. That U.S. News & World Report cover screamed “Scary Weather.” But it’s not true that there are more storms today or that weather is “scarier” than it used to be. As Crichton says, “It’s something that almost nobody actually goes and checks.”

Sadly, he’s right. When “scare stories” fit reporters’ preconceptions, we rarely check with the skeptics. On the subject of global warming, reporters often listen to alarmists and don’t take the trouble to survey the scientists who really know. And even if they do, it’s a mere fig leaf of fairness. U.S. News, for example, buried its one skeptical voice under a shrieking headline, after paragraphs predicting disaster, and between two quotes from alarmists – astoundingly presented as voices of reason – dismissing dissenters.

Crichton got his medical training at Harvard, where he paid his way through college by writing thrillers. When he wrote “The Andromeda Strain,” the story of an organism from outer space that threatens to wipe out mankind, Hollywood called, and his medical career was over. He’s gone on to write book after book that anticipated the future. “Jurassic Park” introduced cloning before others really talked about it. “Disclosure,” about a man who’s sexually harassed by a female boss, also raised issues that were ahead of their time. “State of Fear” may be his biggest risk, because he’s taken on environmental groups that some Americans revere with religious fervor. Crichton says, “Environmental organizations are fomenting false fears in order to promote agendas and raise money.” He points out that the even the scientists who study global warming have an incentive to exaggerate the problem. If you say, “there isn’t a big problem,” you’re less likely to get grant money.

“State of Fear” is already being attacked, he says, by activists who didn’t even read his book. “We seem to be very ready to think it’s all coming to an end,” Crichton says. And there are consequences to that kind of thinking. It can be quite difficult to oppose new laws, however much freedom and money they will take away from you, when you believe they are the only thing that can stop major cities from being lost to a sea swollen by melting icecaps. But we’re not on the way to disaster, except in the form of more laws. “State of Fear” will give you new perspective on “global warming.” Then, when someone tells you “it’s like the end of the world!” you can say: “Give Me a Break.”

Mr. Stossel is co-anchor of ABC News’ “20/20.” ©2005 By JFS Productions Inc.