Your Inner Fish

In the opening episode, Neil journeys from an American highway to the Arctic Circle to connect our lungs, arms, legs and hands to a prehistoric fish that crawled onto land 375 million years ago.

Episode 2 traces our hair, skin, teeth, jaws and sense of hearing back to reptilian ancestors - from ferocious beasts that ruled the Earth, to a little shrew-like animal that lived 195 million years ago.