"A survey completed last year by Dr. Murray Mitchell of the National Oceanic and Atmospheric Administration reveals a drop of half a degree in average ground temperatures in the Northern Hemisphere between 1945 and 1968. According to George Kukla of Columbia University, satellite photos indicated a sudden, large increase in Northern Hemisphere snow cover in the winter of 1971-72. And a study released last month by two NOAA scientists notes that the amount of sunshine reaching the ground in the continental U.S. diminished by 1.3% between 1964 and 1972."
I don't see where Messrs. Mitchell and Kukla were consulting with Exxon, and in fairness, it doesn't speak of the Impending Ice Age either. On the other hand, I haven't finished the article.
"Reid Bryson of the University of Wisconsin points out that the Earth's average temperature during the great Ice Ages was only about seven degrees lower than during its warmest eras--and that the present decline has taken the planet about a sixth of the way toward the Ice Age average."
O--M--G.