


Rocky Road for Roundup
It didn’t take much convincing to get Mike Pietzyk to try a new weed-killing product on one of his cornfields in southeastern Nebraska. “The days of going out and spraying Roundup twice a year—those are long gone,” says Pietzyk, a second-generation grower who has...
Are all forms of Bt toxin safe?
There are many types of Bt toxin in the wild and in genetically engineered plants; research has raised safety concerns relating to some of them. Declaring them all safe is premature, and here’s why. Thus far, the Environmental Protection Agency (EPA) has concluded...