"Summers in Phoenix are notoriously hot. But after two punishing summers of record-breaking heat, the latest milestone, set Tuesday, may be the most ominous yet.

At 11 a.m. local time, temperatures in Phoenix hit 100 degrees for the 100th day in a row. The longest previous 100-degree streak was 76 days in 1993. In other words, this year has seen an uninterrupted stretch of 100-degrees days at least 3½ weeks longer than in any other year since records began in 1896…"