Most of America's Lower 48 states are about to swelter under an unusually large, strong and long-lasting heat dome.
A man died of heat exposure in California's Death Valley National Park, marking the park's second heat death this summer, according to the National Park Service.
13 Investigates found heat-related deaths were up to 61 last year in Harris County, but experts tell us there were likely even more that were not counted.
A 6-month-old boy died after he was left in a hot car for about seven hours, authorities said.
The daughter said she called in a nurse and bought two generators to get the air conditioning running, but that hasn't been enough to revive her 89-year-old mother.
Some 1.5 million CenterPoint Energy customers remained without power a day after the disaster. And while cooling centers are available, some households might not have to means to leave home.