Add Yahoo as a preferred source to see more of our stories on Google. (NewsNation) — This year's extreme heat has more than 250 million people trying to stay cool, and that is putting power grids ...

Add Yahoo as a preferred source to see more of our stories on Google. America's 250th birthday also marks the final stretch of one of the most intense eastern US heat waves in years — one made worse ...

The extreme conditions and high humidity levels will increase the danger of heat-related illnesses, including stroke and ...

Ohio is under a heat advisory this week, with high temperatures in the upper 90s that will feel like 105 degrees or more in the weather forecast. Officials are warning that the hot temperature pose a ...

Forecasters say a dangerous heat wave is descending across much of Southern California, which is likely to bring triple-digit temperatures.

A high-pressure system is bringing dangerous temperatures, record-shattering highs and heightened fire risks across the West ...

Meanwhile, flood watches are in effect along the Gulf Coast and in Florida.

When a devastating heat wave, hurricane, flood or wildfire strikes, people often want to know: How much did human-caused climate change influence this event, if at all? For many years, scientists ...