Peter Clack (@peterdclack) 's Twitter Profile
Peter Clack

@peterdclack

Author of Bloodstains on the Cocaine Trail (2023) & Firestorm Trial by Fire (2003), Churchill Fellow (1995) & recipient of an Australian Walkley Award (2003).

ID: 1793048733942235136

calendar_today21-05-2024 22:38:38

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Peter Clack (@peterdclack) 's Twitter Profile Photo
Peter Clack
@peterdclack

2 months ago

Just 22,000 years ago glaciers 4 km deep covered much of North America & Eurasia, a frozen hellish landscape of tundra & treeless steppe. Earth experienced 40 to 50 consecutive ice ages up to 80,000 years each. A return to this ice age is the greatest threat to mankind - not CO2.

Just 22,000 years ago glaciers 4 km deep covered much of North America & Eurasia, a frozen hellish landscape of tundra & treeless steppe. Earth experienced 40 to 50 consecutive ice ages up to 80,000 years each. A return to this ice age is the greatest threat to mankind - not CO2.