In 2003, my former colleague Eric Klinenberg published Heat Wave: A Social Autopsy of Disaster in Chicago. The book chronicles Chicago’s deadliest heat wave in the summer of 1995 when temperatures in the city reached 106 degrees and the heat index, which measures how hot it feels, was at 126 (Klinenberg, 2003). The heat affected the city’s infrastructure, streets buckled, and the residents were without power for two days. According to the book, more than 700 people died due to heat-related issues, making this the deadliest heat wave in American history. Among those who perished in the heat were a disproportionate number of the city’s most vulnerable population: the elderly, the isolated, people in poverty, and those living in underresourced or even forgotten neighborhoods.