<img src="https://npr.brightspotcdn.com/dims3/default/strip/false/crop/2816×1584+0+0/resize/2816×1584!/?url=https%3A%2F%2Fmedia.npr.org%2Fassets%2Fimg%2F2015%2F05%2F08%2Fbeijing-museum-of-natural-history-2—portrait-david-with-juramaia-fossil_wide.jpg" alt="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.