The world’s trees are in critical danger, with a staggering number of tree species teetering on the brink of extinction, according to a new global analysis released Monday. The decade-long project ...

More than a third of all tree species worldwide face extinction, threatening ecosystems, plants, animals and economies around the world, experts warned Monday. In all, 38% of trees are at risk, ...

They play an essential role in supporting life on Earth, but many species are in decline, researchers found. By Catrin Einhorn Reporting from the United Nations Biodiversity Conference in Cali, ...