In a bid to unearth its own nickel, lithium, and more, the U.S. is using AI to help zero in on mineral-rich deposits.

Some of the country's wartime environmental catastrophes, scientists say, can be turned into long-term ecological gains.

In the plains of western South Dakota, about 25 miles northeast of Mount Rushmore, the Ellsworth Air Force Base is preparing to receive the first fleet of B-21 nuclear bombers, replacing Cold War-era ...