A counterintuitive recipe for wildfires is brewing across drought-stricken Western states: a cold front

For the first time, federal firefighters will be encouraged to wear respirators to protect against smoke-related hazards as they put out wildfires, the U.S. Forest…

Dead, emaciated gray whales have been washing up on Washington state shores at a shocking pace over the last few months.

The U.S. Environmental Protection Agency said residents should feel assured that most properties cleared by the U.S. Army Corps of Engineers don’t have hazardous amounts…

California’s spate of mushroom poisonings, which has killed four people and hospitalized 43 others, is the largest known outbreak of its kind in U.S. history,…

Since the L.A.-area fires, Altadena residents have found toxic compounds such as lead and asbestos in their living spaces and lots. Many have not returned…

The virus that is believed to be responsible for the deaths of three people and the illnesses of three others aboard a cruise ship over…

Five tornadoes hit the Kansas City area Monday night. Did a change in National Weather Service balloon launches leave forecasters in the dark about the…

Chimpanzees that had once formed a cohesive community in Uganda split into factions and turned violent, according to a new study. Nearly 30 chimps were…

Native Americans had dice and games of probability 12,000 years ago, according to a new study. That’s far earlier than the practice is thought to…