Professor Kathy Willis, Director of Science at the Royal Botanic Gardens, poses for a picture while holding the new 'State of the World's Plants' report at Kew Gardens in south-west London on May 9, 2016. Britain's Royal Botanic Gardens warned on May 10 about the threats facing the world's plant kingdom in the first global report of its kind aimed at drawing attention to often-overlooked species. The "State of the World's Plants" report was drawn up by botanists at the Kew Gardens research centre in west London, which has one of the world's largest collections in its greenhouses and sprawling gardens. / AFP PHOTO / DANIEL LEAL-OLIVASDANIEL LEAL-OLIVAS/AFP/Getty Images
