In an unusually protracted oral argument, the three-judge panel of the U.S. Court of Appeals for the District of Columbia ...

Are humans the only species to drive another to extinction? Tom Ruppel | Dixon, California ...

President Trump has already begun to introduce changes that weaken the Endangered Species Act, a cornerstone of U.S. conservation law.

There are only 10 or less of this little porpoise species left in the world. What can be done to save the vaquita?

The trade of endangered long-tailed macaques (Macaca fascicularis) from Cambodia should be suspended, according to ...

Wildlife groups argue the U.S. Fish and Wildlife Service to put common hippos on the endangered list to protect against U.S.