For 60 years, American drivers unknowingly poisoned themselves by pumping leaded gasoline into their tanks. Clair Patterson—a scientist who helped build the atomic bomb and discovered the true age of the Earth—took on a billion-dollar industry to save humanity from itself.

Flint residents mold their lives around a perpetual water crisis and endless unanswerable questions.

“The crisis in Flint isn’t over. It’s everywhere.”

Why a type of gasoline may be responsible for periods of increased crime in the U.S. and abroad.