An investigative report by The Times has uncovered a troubling connection between the U.S. car battery industry and lead poisoning in Nigerian villages. Following the supply chain of batteries used in millions of American cars, the investigation traced the source of the lead to communities in Nigeria, where residents are facing severe health consequences due to exposure. Peter S. Goodman, who covers economics and geopolitics for The Times, discusses the findings of this extensive investigation, shedding light on the hidden costs of consumer products.