 Palm Springs hit 122 degrees Monday, the hottest temperature ever recorded for that day. Last Friday, the city broke its all-time high, hitting 124 degrees. Temperature records are falling across the U.S., and climate scientists are not surprised. For decades, they've been warning that burning fossil fuels heats the planet. Last year was the hottest year on record for the world. The U.S. is warming at a faster rate than the global average. Julia Simon, NPR News.