It's not new to us and most extant species. There were several rapid ~10 C temperature changes at the end of the pleistocene period 10-15k years ago: https://wa

It's not new to us and most extant species. There were several rapid ~10 C temperature changes at the end of the pleistocene period 10-15k years ago: https://wattsupwiththat.com/2012/06/19/the-intriguing-problem-of-the-younger-dryaswhat-does-it-mean-and-what-caused-it/ https://wattsupwiththat.com/2012/06/19/the-intriguing-proble...