Millions of people around the U.S. are again under the threat of severe weather Friday.

Share:
More In Science
Expect a Hot, Smoky Summer in Much of America
The only break much of America can hope for anytime soon from eye-watering dangerous smoke from fire-struck Canada is brief bouts of shirt-soaking sweltering heat and humidity from a southern heat wave that has already proven deadly, forecasters say.
Load More