The history of Earth is marked by at least seven major mass extinctions, including asteroid impact effects 580 million years ago, the end Ordovician glaciation, late Devonian asteroid impacts, end-Permian volcanism and ocean anoxia, end-Jurassic volcanism and Cretaceous-Tertiary asteroid impact—mostly associated with an extreme rise in atmospheric CO2. Currently the seventh mass extinction of species is taking place, mainly as[Read More...]
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