16:18
Deep Look
Build, Borrow, or Steal: 4 of Nature’s Weirdest Homeowners
Meet four creatures who’ve mastered the art of making shelter.
Here’s Why Humans Can’t Lay Eggs
See the unseen at the very edge of our visible world. Get a new perspective on our place in the universe and meet extraordinary new friends. Explore big scientific mysteries by going incredibly small.
Here’s Why Humans Can’t Lay Eggs
Season 12 Episode 20 | 9m 51s | CC
Why do most animals lay eggs, while humans and most mammals give birth to live young? In this episode of Big Ideas from the team behind Deep Look, host Niba explores how eggs first evolved, how they helped animals conquer life on land, and why most mammals eventually shifted from laying eggs to growing babies inside their bodies.
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