JOHN TIERNEY: Holdren’s Ice Age Tidal Wave:

As a long-time student of John P. Holdren’s gloomy visions of the future, like his warnings about global famines and resource shortages, I can’t resist passing along another one that has just been dug up. This one was made in 1971, long before Dr. Holdren came President Obama’s science adviser, in an essay just unearthed by zombietime (a blog that has been republishing excerpts of his past writings). In the 1971 essay, “Overpopulation and the Potential for Ecocide,” Dr. Holdren and his co-author, the ecologist Paul Ehrlich, warned of a coming ice age.

They certainly weren’t the only scientists in the 1970s to warn of a coming ice age, but I can’t think of any others who were so creative in their catastrophizing.

I suppose Ehrlich must have been right about something, sometime or other, but nothing occurs to me offhand. . . .