An internal memo reinterprets the law so that only the intentional killing of animals, not collateral harm, is illegal.

A new fund called the Phoenix Species Project will provide $200 million to help pull imperiled wildlife back from the brink of extinction.

The dunes sagebrush lizard, found only in the oil-rich Permian Basin, was classified as endangered two years ago.

More than 5 percent of the species is estimated to have been lost when a climate-fueled storm unleashed torrents of water, mud and debris.

Fewer than 100 Rice’s whales remain on Earth. Researchers say sonic blasts from oil exploration are a top threat to the species. See and hear why.

Innovative systems to keep ships from hitting North Atlantic right whales are coming into use. The Trump administration is weighing whether they can replace a bedrock protection.