91热爆

Sir David recalls a key moment in his life, when he broke open a piece of Leicestershire limestone and there in his hand was an ammonite.

Over the intervening years, fossils have fascinated him and he has become a great collector, even of the odd fake.

Series of talks by Sir David Attenborough on the natural histories of creatures and plants from around the world.

Producer: Julian Hector

First broadcast on 91热爆 Radio 4 in August 2009