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.

Arizona, California and Nevada will be required to curb their use of the water from the river by a combined 20 percent over the next two years, according to three officials.

Officials said losing out on the ability to do vital prevention work at a perilous time for the region hindered them from being as prepared as they could have been.

The rare temblor for the region may produce some aftershocks in the next couple of days.

The National Park Service replaced panels that discussed the horrors of slavery and George Washington’s ownership of enslaved people.

With the river in freefall, federal officials plan to intervene, possibly imposing large cuts to water usage in seven states. Effects would be felt beyond the West.

Hundreds of records fell as temperatures climbed to levels higher than nearly the rest of the planet. The heat wave will expand across Europe through the weekend.

The storm brought a 1-in-200-year rainfall event to a community in Louisiana. Here’s how much rain fell.

NOAA warned of a rare high-risk level for excessive rainfall that could cause flash flooding in a stretch from eastern Louisiana to the Florida Panhandle on Thursday.

Researchers analyzed 1,000 years of paleoseismic data, or a reconstruction of past tectonic activity.

Expected extreme weather combined with high fuel and fertilizer prices triggered by the war could cause severe food shortages around the world this year, experts say.

The new research found managing low-severity fires across 1 million acres a year could reduce the amount of land that burned from severe fires by about 25 percent, protection that lasts for years.

Independent Sen. Angus King joined them in alleging that “much, if not all” of the revenue from online sales of park passes is going toward D.C. "vanity projects."

The sale of 72,000 acres in leases is nonetheless a step toward extraction in the wilderness home to caribou and polar bears.

The storm looked unimpressive, but then a tornado formed right next to us.