[Citizen Tom Paine]

“Climate” has always changed. About 12,000 years ago the last ice age ended without the help of mankind. It was substantially warmer 62 million years ago prior to the demise of the dinosaurs than it is now. We found coal deposits in Antarctica. There are coal deposits in the Arctic regions.

[edzo4]

[PapaBear3625]

It was substantially warmer 62 million years ago prior to the demise of the dinosaurs than it is now. We found coal deposits in Antarctica. There are coal deposits in the Arctic regions.

Antarctica was not always where it is today. There's a thing called plate tectonics, where the continents shift position over geologic time

Over geologic time spans, a lot of climate change is caused by continents drifting in ways that affect ocean convection currents. When warm currents are prevented from flowing to polar regions, you get massive ice ages

The variability of the sun also can cause major climate change. See for example, the Maunder Minimum and it's correlation to the Little Ice Age 1645–1715