Green, Pets, Sport & Health Earth faces sixth ‘great extinction’ with 41% of amphibians set to go the way of the dodo Editorial TeamonDecember 15, 2014/Comments closed The content previously published here has been withdrawn. We apologise for any inconvenience. Tagged: animals Article Baiji river dolphin Conservation Endangered habitats endangered species Environment extincted species great extinction Main section Nature Journal news rising global temperatures Robin McKie Science Tasmanian tiger The Observer wildlife World Conservation Monitoring Centre in Cambridge.