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, ...

Scientists have found that a mere 30 species of trees in the Cerrado -- the world's largest and most floristically diverse savanna -- account for nearly half of all its trees. The 'hyperdominance' by ...

GENEVA (AP) — An international conservation group is warning that more than half of the European tree species that exist nowhere else in the world are threatened with extinction. The International ...