Heat Wave in Southwest U.S.

The first heat wave of the season is hitting the Southwest U.S. with triple-digit temperatures, reaching over 110 degrees Fahrenheit in Las Vegas and Phoenix. Excessive heat warnings have been issued, and fire crews are on high alert as the unseasonably hot weather poses risks.

Wildfire caused by power lines

Investigators in Texas have found that the largest wildfire in the state's history was ignited by power lines, highlighting the growing risk of wildfires from aging utility infrastructure nationwide.