Flashback to 1978: 'Scientists Warn of Impending Ice Age Threat,' Says Leonard Nimoy

"Climate experts believe the next ice age is on its way."

Leonard Nimoy, 1978: "Scientists are telling us... that the threat of an ice age is not as remote as they once thought."

"During the lifetime of our grandchildren, Arctic cold and perpetual snow could turn most of the inhabitable portions of our planet into a polar desert."