Diverse and full of sea life, the Earth's Devonian era—taking place more than 370 million years ago—saw the emergence of the first seed-bearing plants, which spread as large forests across the ...
Violent supernovas may have caused two of Earth’s largest mass extinctions that have never been completely explained, according to a theory put forward in new research.During the final stages of a ...
Researchers propose a supernova triggered the Late Devonian mass extinction | Page 4 | Ars OpenForum
If we did see a "local" supernova, we'd have plenty of time to develop the technology to protect the earth from its worst effects. Click to expand... We'd certainly have a lot of time, but I'm not ...
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