NATURE

In “Understanding the Natural World,” Sir David Attenborough shares his memories of the scientists and the breakthroughs that helped shape his own career. He also recalls some of his more hair-raising attempts to bring new science to a television audience: standing in the shadow of an erupting volcano as lumps of hot lava crashed around him or being charged by a group of armed New Guinean tribesmen.

Watch Attenborough's Life Stories: Part 2 Preview on PBS. See more from Nature.