(FILES) Britain's Queen Elizabeth II (L) talks with 2019 Chatham House Prize winner British broadcaster and biologist David Attenborough, during the prize giving ceremony at Chatham House in central London on November 20, 2019. 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, is set to mark his 100th birthday on May 8th. (Photo by Eddie MULHOLLAND / POOL / AFP via Getty Images)