The National Weather Service is advising people in 24 states to stay indoors if possible as a heat wave sweeps across the United States.

Much of New York is currently under a state of emergency because of a blistering heat wave. We are about to break a 125-year record. State and local authorities have clear recommendations for stayi… ...

Extreme heat is impacting states across the country. See maps of high temperature forecasts and heat index levels.

A dangerous heat wave, driven by a “heat dome,” is scorching the eastern and central U.S., with heat indices exceeding 100 °F will be hitting major cities.

Large parts of the United States faced a radio blackout on Thursday following a strong solar flare from the sun. The "extreme ultraviolet flash" was captured by NASA's Solar Dynamics Observatory ...

More than 37 million Americans are under heat advisories across the U.S., according to the National Weather Service. Here's the hardest hit areas.

‘No Kings’ Protests Across the United States In Photos and Video Protesters in Portland, Ore. Jordan Gale for The New York Times Share full article ...

Northern lights may be visible in these 18 US States tonight due to ongoing geomagnetic storm conditions. Here are the best places to see them.

Northern lights may be visible in these 13 US States tonight despite waning geomagnetic storm conditions. Here are the best places to see them.