Mysteries of Evolution
The shark, the bee, the bichir, and the musk ox adapted so well to their environment millions of years ago that they are like living fossils. Studying them tells us a lot about evolution and survival.
Who would win in a fight between a lion and a porcupine? Also, meet Sweetpea the bike-riding owl. Gail and Stephen train as mushers (sled dog racers). Plus there are aliens living among us, animals from thousands of miles away, find out if there are any living near you.
Guest pro Bryce Davison has some encouraging advice for Giuliana, a budding young skater working her way up to a double jump. Things heat up on the ice when Dr. Heather brings angular momentum into the mix.