The newest environmental threat to the Great Lakes is very, very small. 
Tiny plastic beads used in hundreds of toiletries like facial scrubs and toothpastes are slipping through water treatment plants and turning up by the tens of millions in the Great Lakes. There, fish and other aquatic life eat them along with the pollutants they carry — which scientists fear could be working their way back up the food chain to humans. 
This looked familiar: 
FRIDAY, APRIL 12, 2013