On the universal curve, performance climbs steadily as organisms warm until they reach an optimal temperature where activity ...

Building high pressure and offshore flow allowed for warm and dry conditions to dominate west of the mountains Wednesday, which will be the hottest day of the week. A Heat Advisory blanketing the ...

Nicole Brown Chau is a deputy managing editor for CBSNews.com. She writes and edits national news, health stories, explainers and more. Nikki Nolan is a meteorologist for CBS News and Stations. She ...

A dangerous heat wave is scorching a huge chunk of the eastern United States, as tens of millions of people from Kansas to Maine endured "extreme heat risk," the National Weather Service said on June ...

WASHINGTON – A deadly, record-setting heat wave was continuing to blast most of the eastern U.S. on Tuesday, June 24, forecasters said, with temperatures soaring to near 100 degrees for tens of ...

A heat advisory is in effect for much of Florida, including Jacksonville, with heat index values reaching up to 113°F. High temperatures in the mid-90s are expected throughout the weekend, with ...