Why do male testes dangle outside the body in an unprotected sack?⁠ ⁠ For such an important part of the survival of the species, @rowhoop is baffled by this evolutionary choice. ⁠ ⁠ So on the #podcast we explore the enduring mystery of the scrotum - and how some mammals don’t have them at all.⁠ ⁠ Hear the full story on The world, the universe and us, a news podcast for the insatiably curious, hosted by Rowan Hooper and Penny Sarchet.⁠ Learn more⁠: https://podfollow.com/the-world-the-universe-and
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