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. Courtesy Smithsonian Channel hide caption toggle caption Courtesy Smithsonian Channel 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. …