Hurricane Priscilla continues to intensify in the Pacific Ocean. Here's what you need to know about where the storm is headed.

Combined moisture from Priscilla and Tropical Storm Raymond will bring torrential downpours to parts of Mexico and the U.S. Southwest, with a risk of 4-8 inches of rain and life-threatening flash flooding.

In the Pacific, Tropical Storms Priscilla and Raymond threatened heavy rain along the Mexican coast, and Priscilla could cause flash flooding across the U.S. Southwest through the weekend. Flood watches were issued for parts of Arizona, California and Nevada.

For nearly half a century, a mysterious sound has echoed through a remote stretch of the Pacific Ocean, eluding scientists and oceanographers alike. Rhythmic and persistent, this underwater signal sparked curiosity,

Beyond disrupting the ocean’s food web and fisheries, the underwater heat wave, known as "The Blob," can alter weather on land thousands of miles away. Since May, an ever-shifting mass of overheated water has occupied much of the northern half of the Pacific Ocean.

The U.S. National Hurricane Center says Tropical Storm Jerry has strengthened in the Atlantic Ocean on a path toward the Caribbean.

New research from the University of St Andrews has shed light on a crucial mechanism of lowering atmospheric CO2 during Earth's past ice ages.

Washington must do more to resist Beijing's "gray-zone" moves in the South China Sea and against Taiwan, says Ely Ratner.

The largest railroad merger in U.S. history was announced less than three months ago, and opposition has begun. On July 29, 2025, Union Pacific Corp. announced it had agreed to buy Norfolk Southern Corp.

But the new details they offered about the cause of the fire only added to residents' anger and dismay about how city officials handled the fire that killed 12 people and destroyed more than 6,700 structures across Pacific Palisades and Malibu. It also renewed calls for City Hall to be held accountable.

Some of the most substantial low-elevation rain and mountain snow since early last spring will fall on parts of the western United States this weekend to early next week.