After a century of oil production, a new federal report finds only 3 million barrels of undiscovered oil left in southwest ...

Aidan Thornton, a reader from Minneapolis, has visited the site, now Pipestone National Monument, several times. He wrote to ...

As PG&E’s aging Diablo nuclear power plant is up for a license renewal, one scientist cites new GPS data to suggest there’s a looming seismic threat.