Leonard Nimoy on the coming ice age (1978)

Climate experts believe the next ice age is on its way.  According to recent evidence, it could come sooner than anyone had expected.  At weather stations in the far north, temperatures have been dropping for thirty years.  Sea coasts long free of summer ice are now blocked year round.  According to some climatologists, within a lifetime we might be living in the next ice age.

~ Leonard Nimoy, excerpt from the 1978 show, "In Search of: The Coming Ice Age"

Lowell Ponte on global cooling (1976)

We simply cannot afford to gamble... by ignoring it. We cannot risk inaction. Those scientists who say we are merely entering a period of climatic instability are acting irresponsibly. The indications that our climate can soon change for the worse are too strong to be reasonably ignored.

~ Lowell Ponte, The Cooling (1976), p. 237