Deadly heatwave sees U.S cities smash all-time temperature records as 10% of Americans are placed under severe Daily MailDeath Valley May Hit 130 Degrees, Which Would Tie World’s Hottest Recorded Temperature DeadlineRecord-breaking heatwave threatens 130 million people in US Al Jazeera EnglishPersistent heat wave in the US shatters new records, causes deaths in the West and grips the East CNN