The Case of the Sleeping Trees (Interactive E...

Why do humans usually have five fingers on each hand? And what if one day, we could grow a new finger if we lost one? In this episode, a question from six-year-old listener Ayla sends us on a journey from tiny developing embryos to one of the most amazing animals on Earth: the ax ...  Show more

In this episode, we talk to two scientists who study animal friendships, in different animals, and in different ways. We’ll hear from Karen Bales, who studies titi monkeys (AKA “fuzzy little guys”) and Annaliese Beery, who studies voles (AKA “the cutest rodents”). Get ready to di ...  Show more

Did you know? We are back with another episode of Sleep Tight Science and in this episode we are going to learn about trees. Have you ever wondered about how trees grow? How can you tell how old they are? or Why are trees so important? In this episode we are going to talk about a ...  Show more

This is a preview episode. Get the full episode, and many more, ad free, on our supporter's feed: https://getsleepy.com/support. The Tree of Answers Tonight, we have a story sprinkled with intrigue. A young boy, named Charlie, seeks the answers to life's mysteries. But a magica ...  Show more

Happy Earth Week! What has 3 trillion trees and one kid named after a birch tree?

Andrew & Polly's family tree has (at least!) 3 tree experts who give us just the tiniest glimpse into the wonder of all things arboreal. Thanks to Bay Area-based <a href='https://www. ...

We love listener mail! You've sent us some amazing notes. Some made us laugh, some made us cry, and some made us say—hey, that’s a great question! We should answer it. So that’s what we did. This week, we dig into some of your questions about trees. What’s up with that tree-plant ...  Show more