Humans have an unlikely ancestor – fish. But how did a fully aquatic animal leave the water and walk on land? We investigate one of the most crucial events in evolutionary history Show more
Discover 11,128,835 listings and 277,935 playable programmes from the BBC
Humans have an unlikely ancestor – fish. But how did a fully aquatic animal leave the water and walk on land? We investigate one of the most crucial events in evolutionary history Show more