Heat waves can form when a high-pressure system moves into a region and stalls. The system can force warm air downward, acting like a cap as it keeps the cool air near the surface from rising, ...

Australia has always had heat waves. But this week's heat wave in southeastern Australia is something else. Temperatures in some inland towns in South Australia, New South Wales and Victoria were up ...

The jet stream, or any wind, is the result of differences in surface temperature. In simple terms, warm air rises, creating low pressure, and cold air sinks, creating high pressure. Wind is the ...

Australia has always had heatwaves. But this week’s heatwave in southeastern Australia is something else. Temperatures in some inland towns in South Australia, New South Wales and Victoria were up to ...

MEMPHIS, Tenn. - It’s the kind of heat that takes you back 45 years to memories of Memphis in the summer of 1980. That July, the city hit 100 degrees or hotter for 15 days in a row. Memphis' hottest ...

Extreme heat can become lethal quickly. A young man cools off at Washington, D.C.'s Yards Park during a heat wave in 2021. Olivier Douliery/AFP via Getty Images For many people, summer is a time for ...

Heat and smoke from wildfires are spreading across the country this week, impacting air quality and prompting heat alerts from Canada to the Gulf of Mexico. A ridge of high pressure has expanded over ...

Millions of people in southeastern Australia are sweating through a record-breaking heat wave. The heat this week is likely ...

Marine heat waves have become longer and more frequent along the U.S. West Coast, as elsewhere in the world. But heating doesn’t always lead fish to change their location. A new study suggests a ...