A section of the Anio Vetus aqueduct stands in the countryside near Tivoli, 30 kilometers out of Rome, on September 28, 2013. | Filippo Monteforte/AFP/Getty Images

Antimony Poisoning — Not Lead — May Have Contributed to the Roman Empire’s Fall

Analysis of a 2,000-year-old Roman pipe fragment from Pompeii revealed traces of antimony, a chemical that’s even more toxic than lead.

A lead pipe sample is analyzed at University of Southern Denmark. | Southern Denmark University