NPR News: Science news: Elements of life on a Saturn moon and how spaceflight affects the brain

Science news: Elements of life on a Saturn moon and how spaceflight affects the brain
NPR's Ari Shapiro talks with hosts of NPR's science podcast, Short Wave about Saturn's moon Enceladus, a tiny 'quasi-moon' near Earth's orbit, and how spaceflight affects astronauts' brains.

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