Scientists have concluded it's going to be more difficult than they initially thought to reduce phosphorus loads into Lake Erie by 40%.
That's the target set by Great Lakes states.
Phosphorus is a crop fertilizer that also encourages cyanobacterial blooms.
Rebecca Muenich worked on a study to evaluate ways to control the blooms.
Meunich is a former researcher at the University of Michigan's Graham Sustainability Institute, and now an assistant professor at Arizona State University.