"Record-breaking heatwave engulfs US, affecting millions"

The National Weather Service has issued heat alerts for about one-third of Americans as extreme heat continues to impact a large portion of the US. More than 115 million Americans across 16 states are under heat alerts, with temperatures reaching dangerous triple digits. Daily temperature records are being broken in several cities, and the scorching heat is expected to continue for the coming days. Relief may come as a cold front sweeps through the South, but temperatures are still expected to remain high in other parts of the country.