Why do male testes dangle outside the body in an unprotected sack?
For such an important part of the survival of the species, Rowan Hooper 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-us
#EvolutionFacts, #WeirdBiology, #HumanEvolution, #SciencePodcast, #Science, #ScienceFacts, #NewScientist, #Podcast,
