Duquesne Light said Wednesday's severe weather and extreme heat could lead to power outages in the Pittsburgh area.

Furnace-like heat and the threat of thunder and lightning are wreaking havoc at the Club World Cup -- and more of the same is ...

U.S. regional electric grid operators scrambled to avoid rotating blackouts on Tuesday, preserving razor-thin power ...

Nearly 160 million people are under heat alerts from eastern Texas to Maine, as temperatures are forecasted to be as much as ...

The temperature in New York City has reached 100 degrees as the eastern U.S. sweltered under an extreme heat wave ...

Extreme heat makes it especially hard for your body to cool down, so you need to be extra careful if you exercise or play ...

Central Pennsylvania is experiencing a dangerous heat wave with record-challenging temperatures and increasing chances of ...

Extreme heat is making air pollution worse, scientists say. And President Trump’s regulatory rollbacks could drive air ...

But a couple thousand, mainly in Oneida County, still remained without power amid record-breaking heat. The renaming ...

When extreme heat arrives, here are science-based tips to keep your home cool, from the most efficient way to use air ...

A long-lasting extreme heat wave is reaching its dangerous crescendo Tuesday, likely bringing the hottest day in a decade to ...

As tens of thousands of people braced for more extreme heat on Tuesday, authorities and public health experts in the United ...