Five Species Likely to Become Extinct in the Next 40 Years
Conservationists estimate that one-eighth of all bird species, one-fifth of mammal species and one-third of amphibian species are at risk of extinction
- By Erica R. Hendry
- Smithsonian magazine, July-August 2010,
(Mark Carwardine / NaturePL.com (Captive))
Scientists declared the dolphin extinct in 2006 after a survey of the Yangtze River failed to yield a single one, but there has since been an unconfirmed sighting. Dams and water pollution have eliminated or damaged the animal’s habitat.