Five years into the full-scale conflict, it has become clear that the model of strategic deterrence – the "steel porcupine" ...

For the first time in decades, a radio-collared endangered Mexican wolf crossed from the US into Mexico last week in New ...

Trump's sign-off on a permit advances the 645-mile Canada-to-Wyoming crude pipeline, but challenges from environmental groups as well as further state and federal reviews are still ahead.

The U.S. Steel eaglet that swallowed a fishhook has been returned to its nest after a successful surgery and recovery.

Office of Nuclear Energy and the National Reactor Innovation Center (NRIC) have announced the first four developers ...