Technicians retrieve frozen DNA samples at the Jodrell Science laboratory at Kew Gardens where staff work on the extraction of plant DNA 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
