Latest snapshot of threats to animal and plant species published by international conservation group . The seed bank at Kew , the largest of its kind in the world , currently stores 11 % ( around 31,000 specimens ) of the world 's plant species . 3,947 species now face threat of extinction including 41 % of amphibians and 33 % of reef building corals . Report is `` clarion call to world leaders gathering in Rio , '' says WWF director general Paul Smith . IUCN director general warns Rio `` doomed to ridicule '' if world leaders do n't act decisively .
Latest snapshot of threats to animal and plant species published by international conservation group . 3,947 species now face threat of extinction including 41 % of amphibians and 33 % of reef building corals . Report is `` clarion call to world leaders gathering in Rio , '' says WWF director general Paul Smith . IUCN director general warns Rio `` doomed to ridicule '' if world leaders do n't act decisively .