[kbutler]

"The battle to feed all of humanity is over. In the 1970s hundreds of millions of people will starve to death in spite of any crash programs embarked upon now. At this late date nothing can prevent a substantial increase in the world death rate." - Paul Ehrlich, 1968

"perhaps the most serious flaw in The Bomb was that it was much too optimistic about the future" - Paul Ehrlich, 2009

"I do not think my language was too apocalyptic in The Population Bomb. My language would be even more apocalyptic today." - Paul Ehrlich, 2015

The message remains constant, in spite of contrary evidence, but the mechanism of apocalypse changes over time.

When you're faced with contrary evidence, do you change your mind or double down?

Yes, climate change can cause significant problems. Yes, human civilization affects climate. However, adaptation with our ever-increasing scientific and technological capability appears most likely to maximize well-being.