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Episode 320: Cosmic Rays Alter Biodiversity?

Play Feb 17•4:33

There's a pattern of forms of life on Earth growing both more and less diverse over time, and we may be able to trace it back to our solar system's path through the Milky Way galaxy. Every 60 million years or so, our solar system emerges north out of the average plane of the galaxy's disk, and the variety of Earthly life drops. It may be due to increased exposure to high-energy cosmic rays. ...

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