9 surprising facts about David Attenborough on his 99th birthday

Sir David Attenborough opens the Turner and the Thames, Five paintings at the artists house in Twickenham on January 10, 2020 in London, England.

Sir David Attenborough is one of the world's most recognizable naturalists and documentary-makers. In a career spanning eight decades, Attenborough has written, presented and narrated some of the most-watched nature documentaries, such as "Life on Earth" and "The Blue Planet." To celebrate his 99th birthday, here are 9 unusual facts about the biologist and nature historian.

1. Attenborough is agnostic