Why Isn’t Paraquat, a Weedkiller Linked to Parkinson’s Disease, Banned in the United States?

There is a weedkiller that has been linked to Parkinson’s disease for over a decade. Its effects on public health are so alarming and well-known that countries like Brazil and China have banned its use. But while governments around the world curtail the application of this herbicide, one country has doubled its use: the United […]