Dr. William Gray, a pioneer in the science of seasonal hurricane forecasts, told a packed lecture hall at the University of North Carolina that humans were not responsible for the warming of the earth.
"We're brainwashing our children," said Dr Gray, 78, a long-time professor at Colorado State University.
"They're going to the Gore movie [An Inconvenient Truth] and being fed all this. It's ridiculous."
"The human impact on the atmosphere is simply too small to have a major effect on global temperatures," Dr Gray said.
"It bothers me that my fellow scientists are not speaking out against something they know is wrong," he said. "But they also know that they'd never get any grants if they spoke out. I don't care about grants."
"We'll look back on all of this in 10 or 15 years and realise how foolish it was," Dr Gray said.