4 junio 2015
Scientists have raised the estimated number of tropical tree species to at least 40,000 to 53,000. Many tropical tree species risk extinction because of their rarity and restriction to small geographic areas, reaffirming the need for comprehensive, pan-tropical conservation efforts.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/Fuw9VIulefM/150604162601.htm
