Tiny aerosol particles in the air play a big role in regulating how much sunlight our planet absorbs or reflects, and how clouds form above us. In a recent study, researchers found that extreme heat ...

Temperatures nationwide are too hot to handle as cities release advisory notices. Local and national rail services are slowing down to avoid mechanical failure. Here's how to stay safe from the ...

Forecasters predict the worst of a record-setting heat wave may soon be over — but millions still need to take precautions to stay safe from dangerous heat. The most significant heat conditions are ...

During Australia's unprecedented heat wave in late January, air temperatures reached 50°C in inland South Australia.

Add Yahoo as a preferred source to see more of our stories on Google. Extreme heat warnings and advisories have been issued to more than 130 million people across the eastern U.S. this week. (National ...

Philadelphia broke a daily record high today, reaching 99 degrees as the region's heat wave officially began. The high temperature so far at Philadelphia International Airport reached 99, breaking a ...

Central Florida braces for near-record-high temperatures before a cold front brings a sharp drop.