Thought-provoking programme exploring some radical new ideas about earth's history.
You may not think you have much in common with fish, but...
Drawing on the latest science Ice Age Giants explores how these incredible beasts lived.
The animal is a relative of modern boas and lived in Colombia 58-60 million years ago.
America and Eurasia were once home to the sort of mammals that draw tourists to Africa.
There are 70 million specimens to explore in the wonderful NHM.