If Dinosaur Train was a documentary, would we know?
April 12, 2018 12:18 PM Subscribe
What if dinosaurs had an advanced civilization? To be clear, they almost certainly didn't. But, if they did, would we know? The question is relevant to xenobiology, which aims to find traces of alien life, perhaps long after it is extinct. A new paper [pdf] suggests that synthetic molecules like plastic and potentially nuclear fallout, would be detectable in the geologic record, although it might be challenging to separate signals like climate change from other abrupt events. Others have argued that, over geologic times, even plastics will be gone. (except from the fascinating book A World Without Us) [prev.],
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