A groundbreaking yearlong investigation has exposed the hidden dangers of U.S. car batteries, linking them to widespread lead poisoning in Nigerian villages. The report, conducted by The Times’ Peter S. Goodman, reveals that the U.S. automotive industry’s reliance on lead-acid batteries has created a toxic supply chain affecting both workers and communities. The findings highlight the environmental and health risks associated with the production and disposal of these batteries, raising urgent questions about corporate responsibility and global labor standards.