How do adult strawberry poison frogs pass on toxins to their tadpoles? What happens when scientists add iodine to axolotl tanks? Find out, as our How To Adult hosts Rachel Calderon-Navarro, Project Manager at DFTBA, and Hank Green face...

Evolution doesn't care about ethics - it cares about surviving and getting your alleles out there as much as possible. From that perspective, cannibalism can seem like a pretty good idea to some creatures. Hank introduces us to three...

On this episode of Breaking Trail, Coyote discovers the most bizarre creature he’s ever found, a Caecilian! Wait a what?! A Caecilian, while at first glance looks exactly like a giant earthworm, is actually an amphibian more closely...