(CNN) — Scientists say they have the first recorded video evidence of narwhals using tusks not only to strike and manipulate fish during feeding but also engage in what appears to be playful ...

A Trump administration executive order is setting the U.S. on the fastest path to a nuclear accident. By demanding that the NRC cease to issue regulations and guidance without written permission ...

A developer of small nuclear reactors is going public via a special purpose acquisition company led by former Cantor Fitzgerald Chief Executive Officer Shawn Matthews. Terrestrial Energy Inc. has ...

By Kaleigh Rogers For an animal with an ivory appendage half the length of its body protruding from the top of its head, a narwhal moves in the water with surprising grace. “It’s almost ...