Remote islands are excellent laboratories for observing evolution at work -- and in the case of a flightless bird called the Aldabra rail, we can observe how its evolution happened twice. Learn about iterative evolution in today's classic episode of BrainStuff, based on this article: https://science.howstuffworks.com/life/evolution/iterative-evolution.htm

Why Are Brown Recluse Spiders Not All That Scary?
11:13

BrainStuff Classics: When Has a Single Vote Decided an Election?
07:50

How Do You Grow a 3,000-Pound Pumpkin?
11:56