A brutal heat wave across the eastern United States trapped millions of people in sweltering air this week with record-high temperatures.

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.

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.

Severe Weather 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.

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.

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.

MADISON, Wis. (AP) — Tens of millions of people across the Midwest and East endured dangerously hot temperatures again on Sunday as a sprawling June heat wave that gripped much of the U.S. was ...

Sunday marked the second straight day of extreme heat across the Midwest and East Coast.