Death Valley, an arid area of national park in the Mojave Desert, isn’t just hot, it’s the hottest. Or, at least, it holds the official Guinness World Record for the highest ever recorded air temperature, an earth-scorching 134°F (57°C). The record, set in July 1913, was originally superseded in 1922, when 136°F (58°C) was registered in El Azizia, Libya. But, 90 years later, it was concluded that there was too big a margin for error, leaving the California area the dead-heat winner once again.