Insect scientists say federal regulators need to take action against a growing pest problem in biotech corn.
They say corn rootworm has started to become resistant to Monsanto's Bt corn, which is genetically engineered to resist the damaging and costly pest.
The 22 scientists expressed their concerns in a letter sent to EPA earlier this week.
University of Illinois insect behaviorist Joseph Spencer was one of them.
The Environmental Protection Agency will hold another community meeting on Tuesday evening, to talk about the cleanup of the former Carter Carburetor plant in north St. Louis.
This is the third community meeting the EPA has held to discuss the cleanup.
St. Louis Public Radio is a service of the University of Missouri-St. Louis.