How everyday people started a movement that's shaping climate action to this day : Throughline

https://www.npr.org/2023/10/05/ [login to see] /climate-action-environmentalism-history
Deborah and Ken Ferruccio were driving in their red truck down a rural North Carolina highway one night in 1978 when they suddenly came upon big yellow signs reading: "Caution, PCB chemicals spilled along roadways." There was a three-foot swath of a brown substance along the sides of the road that was smelly and seemed toxic.

"I was very confused because I knew something about chemicals and I didn't know exactly the specifics on PCBs, but the signs indicated they were very serious," Ken says.

Immediately they wondered if the danger was airborne, and whether they should close the windows — or open them. Should they be worried about exposure at all, since they weren't in direct contact with the sludge?