(FILES) Britain's Prince William (L) and British naturalist, documentary maker and broadcaster David Attenborough attend a conversation during the World Economic Forum (WEF) annual meeting on January 22, 2019 in Davos, eastern Switzerland. David Attenborough, a leading voice on climate change and biodiversity loss whose landmark documentaries transformed popular understanding of the natural world for a global audience, marks his 100th birthday on May 8, 2026. (Photo by Fabrice COFFRINI / AFP via Getty Images)