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A comment on Evidence of 90M-year-old rainforest uncovered beneath Antarctic ice.

Re:Evidence of 90M-year-old rainforest uncovered beneath Ant... by Reelin on Friday April 03, 2020 @02:17AM (#22766707)
Original paper: https://www.nature.com/articles/s41586-020-2148-5
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Re:Evidence of 90M-year-old rainforest uncovered beneath Ant... by aww_dang on Friday April 03, 2020 @02:31AM (#22766747)
>"A climate model simulation shows that the reconstructed temperate climate at this high latitude requires a combination of both atmospheric carbon dioxide concentrations of 1,120–1,680 parts per million"

Does this allow for other methods of warming? Does it assume that all things would be equal except for carbon dioxide levels? If so, why?

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