David Attenborough celebrates his 100th birthday

Sir David Attenborough at the Beijing Museum of Natural History with fossil of Juramaia, as featured in the Smithsonian Channel series Rise of Animals: Triumph of the Vertebrates.

He was born before the Great Depression, came of age in WWII, and is still making wildlife documentaries. Brits call David Attenborough a national hero, as he celebrates his 100th birthday.