Instructors and students work together to assemble a dual dipole antenna for observing bursts of radio activity associated with solar storms.

A record-setting heat wave was continuing to blast most of the eastern U.S. June 24, forecasters said.

Eastern half of US sweltering again, with dangerous heat wave expected to last until midweek Sunday marked the second straight day of extreme heat across the Midwest and East Coast.

The heat wave is expected to subside on Wednesday, but it will take until Thursday for much of the eastern United States to see real relief from the extreme temperatures.

An "extremely dangerous heat wave" is continuing to scorch a huge area of the eastern United States June 23, affecting tens of millions of people.

A dangerous heat wave has set in over roughly half of the nation, leaving nearly 150 million people from Texas to Maine under heat alerts on Monday.

Tens of millions of people across the Midwest and East are enduring another sweltering day of dangerously hot temperatures as a sprawling June heat wave grips much of the U.S.

Eastern half of US sweltering again, with dangerous heat wave expected to last until midweek By Associated Press June 23, 2025 Share ...