Flashback 1974: ’60 theories have been advanced to explain the global cooling’
In the 1970’s scientists were predicting a new ice age, and had 60 theories to explain it.:
Ukiah Daily Journal 0 November 20, 1974 - "The cooling trend heralds the start of another ice age, of a duration that could last form 200 years to several millenia...Sixty theories have been advanced, he said, to explain the global cooling period."