A century of hair samples proves leaded gas ban worked
Summary
Ars Technica reports that hair-analysis over nearly a century demonstrates the effectiveness of the EPA's lead regulations, showing about a 100-fold drop in lead levels after the leaded-gas era began in the early 20th century. The study links regulatory action to reduced exposure and discusses historical figures who influenced lead phase-outs, while noting current policy debates on deregulation in environmental rules. The research underscores how long-term biomonitoring can validate public health interventions.