
One-Quarter of Sharks and Rays at Risk of Extinction
A quarter of the world's sharks and rays are at risk of extinction, according to a new assessment by the International Union for Conservation of Nature (IUCN).
Find out everything there is to know about extinction and stay updated on the latest extinction news with the comprehensive articles, interactive features and pictures at LiveScience. Learn more about amazing discoveries scientists are making as they uncover the causes and other details of mass extinctions throughout history.
Related Topics: Evolution, Climate Change, DNA and Genes, Fossils