This searing yet quirky film investigates the “natural” disasters we’re willing to see and prepare for and the “unnatural” ones we’re not. Adapted from Eric Klinenberg’s groundbreaking book Heat Wave: A Social Autopsy of Disaster in Chicago, Peabody Award-winning filmmaker Judith Helfand uses her signature serious-yet-quirky connect-the-dots style to take audiences from the deadly 1995 Chicago heat disaster deep into one of our nation’s biggest growth industries — disaster preparedness. Along the way she forges inextricable links among extreme weather, extreme disparity, and politics, daring to ask: What if a ZIP code were just a routing number, and not a life-or-death sentence?