MAMMOTH LAKES, Calif. (AP) - Three ski patrol members who died on an Eastern Sierra peak likely were asphyxiated by gas spewing from the volcanic vent they were fencing off, a coroner said Friday. One ...

With Mammoth's 72 industrial fans, Swiss start-up Climeworks intends to suck 36,000 tonnes of CO2 from the air annually to bury underground, vying to prove the technology has a place in the fight ...

Winter sports lovers, who hoped California’s heavy winter storm on Thursday would drop enough snow in the mountains to kick off an early ski season, need to wait a bit longer. The storm that rolled ...

Obviously, many visitors to Yellowstone National Park gape in awe at the roaming bison or the colour of the Grand Prismatic Spring, but few know that the park is standing over a giant supervolcano.