"Record-Breaking Heat Dome Scorches Southern and Western U.S."

A severe heat wave is expected to hit southern and western states, with temperatures soaring above 110 degrees Fahrenheit, affecting at least 29 million people. Cities are issuing warnings and opening cooling centers to help residents cope. Record temperatures are anticipated in several areas, including Phoenix and California's Death Valley. Authorities are on high alert for heat-related illnesses and fires, and new cooling techniques are being employed to save lives. The cost of cooling homes is also rising, adding to the challenges posed by the extreme heat.