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56 million years ago, the Earth suddenly heated up – and many plants stopped working properly
(theconversation.com)
this post was submitted on 01 Dec 2025
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You should read up on the Silurian Hypothesis. It’s a fun scientific paper asking whether, if another intelligent species had arisen on Earth in deep time, we would be able to detect it. One of the most promising theoretical signals might be unexplained carbon spikes…. Very little other evidence could be expected to endure. No reason to believe it’s true, hard to prove a negative, etc etc, but it’s fun to think about.
That's a fun idea.