The Fish-Tetrapod Transition

Recorded at the Crossed Wires Festival in Sheffield, Misha Glenny and guests discuss Casablanca, one of the greatest films from Hollywood’s Golden Era. The film stars Humphrey Bogart and Ingrid Bergman and features the unforgettable song As Time Goes By. Casablanca opened in Nove ...  Show more

Dark Matter is a proposed form of matter that does not absorb, reflect or emit light. It is known to make up 27% of our universe, while the matter that makes up stars and galaxies accounts for only 5%. In this archive episode, first released in March 2015, Melvyn Bragg and his gu ...  Show more

People often talk about being descended from apes. But go back a bit further and we have a more unlikely ancestor – fish. Improbable as it may sound, the creature that gave rise to every bird, reptile and mammal on Earth today lived a fully aquatic life. So how did it switch to l ...  Show more

Some fish that strut the seafloor share a common ancestor with humans, so researchers are hoping that studying these fish could help us understand how we walk. Learn how in this classic episode of BrainStuff, based on this article: https://animals.howstuffworks.com/extinct-animal ...  Show more

By the end of the Devonian Period, the land had exploded with plant life and ancient invertebrates. There was also Tiktaalik - one of the first known vertebrates able and willing to move from the water to land. Our distant relative figured out how to survive in this dramatically ...  Show more