Ten states are forecast to see dangerous downpours and thunderstorms this week.

When male mosquitoes are infected with a naturally occurring microbe called Wolbachia, the eggs laid by their female mates don’t hatch.

At the center of a widening crisis for one of the nation's great wildlife comebacks is a fish most Americans would hardly recognize.

Major League Baseball contacted the administration about hosting a game in a national park, with an agency official scouting Grand Teton as a possible location.

Future Coach columnist Mike Coren answers a reader question about improving your diet without breaking the bank.

The Philadelphia pigeon tour was intended to be a one-time event, but demand has kept it going, despite a few pigeon poop mishaps.

Sixteen claims follow the president opening up most of the reserve sacred to Native Americans to mining and drilling.

The strongest heat dome on the planet will soon tower 3.7 miles above Tennessee, drawing extreme heat and humidity into the central United States from the Gulf of Mexico.

Americans born between 1951 and 1980 are invisibly scarred by lead exposure that embedded the toxic metal into their bones. It reemerges later in life.

Air pollution in dozens of cities rose after U.S. embassies stopped providing readings that had previously spurred local government action, a study found.

Agency chief Lee Zeldin had planned the repeal as part a slew of proposals he called “the largest deregulatory announcement in U.S. history.”

A Washington Post analysis found that 133 million people live in counties where a quarter of nights were extremely warm.

The risks of childhood food allergies are widely discussed but they can also appear later in life.

Timothy Smith, who was hiking with two friends whose bodies were recovered, has been missing for over a week.

Michael Boren, who oversees the U.S. Forest Service, asked for more resources to contain a seven-acre blaze last month, officials said.

Nine people have contracted Vibrio vulnificus, and five have died, according to state officials. In recent years, warming waters have also pushed cases farther north.

A weekend of new blazes across Canada’s British Columbia has created new smoke that is now wafting into the United States.

Hamilton was removed from the job last year after saying the agency shouldn’t be dismantled.

A Post analysis shows that about 20 percent of the land area — covering around 7.5 million square miles — experienced moderate or greater concentrations of the soot released by wildfires at some point during July.