Scientists Check Midwestern Waters For Effects Of Ag Runoff

A team from the U.S. Geological Survey will spend this summer collecting water samples from Missouri streams to test for hundreds of pesticides and nutrients used in farming.

Papoulias and Nicks close the minnow cages with the help of environmental toxicologist Don Tillitt. The biologists will check in on these minnows every other day until the end of July.
Photo by Abbie Fentress Swanson/Harvest Public Media