Old Hair Reveals How Toxic America Once Was

A century of hair samples shows how environmental rules helped slash Americans’ lead exposure by up to 100 times. Before the Environmental Protection Agency was created in 1970, lead pollution was deeply embedded in everyday American life. Communities were exposed through industrial activity, lead-based paint, aging water pipes, and most heavily through vehicle exhaust. Lead [...]

from SciTechDaily https://ift.tt/sUrZhxj