An "oppressive" record-breaking heat wave that's helped fuel deadly storms in Texas and surrounding states could continue through the Fourth of July holiday weekend, the National Weather Service warned Wednesday.
Why it matters: Extreme heat poses a threat to people's health, can lead to hospitals dealing with an influx of patients with heat-related illnesses, and it's the top weather-related killer in the U.S. in a typical year. It also puts a heavy strain on power grids.
