[fhayek]

I bet that it shows that Earth’s climate has warmed, and cooled thousands of times over the last million years. With man, without man, with dinosaurs, without dinosaurs, with unicorns, without unicorns. One thing that does not happen is that the earth does not change.

[Red_Devil 232]

You could ad. With AlGore, without AlGore, with the UN, without the UN.

[gleeaikin]

There have been about 8 major warm/cool cycles, but many smaller ones. The earth changes quite a lot. Every time a major volcano erupts [Tambora, Toba, Katmai], a meteor strikes like the dinosaurs 65 mya.