Flashback: "Warning Signs of a Possible Return to Glacial Period" says New York Times

The Earth's climate is complex but the New York Times has always managed to find the politically trendy headlines for their science articles, as in this example from 30 years ago:

SCIENTISTS SEEK DATA ON CAUSES OF ICE AGE; Such Information Seen Providing Warning Signs of a Possible Return to Glacial Period

April 21, 1977, Thursday

By WALTER SULLIVAN

Page 13, 816 words

Using heavy hydrogen in ancient wood as an indicator of past climate, scientists at the California Institute of Technology have concluded that at the height of the last ice age, ice-free areas on the North American hinterland were warmer in winter than they are today. ....