The New York Times
By Danny Hakim
December 20, 2016
HUDDERSFIELD, England — The factory here, set amid a brick campus in a green and hilly industrial town, recently celebrated its centennial.
It produces paraquat, one of the world’s most enduring weed killers — but not one that can be purchased in this part of northern England, in the rest of Britain or across the Channel in the rest of the European Union.
So it will be sent to the United States, or another part of the globe that still allows paraquat to be sprayed on weeds.
Paraquat has long been controversial because of its use in suicides in many parts of the world, since drinking one sip can be lethal. But now regulators in the United States are grappling with a wave of research linking paraquat to a less immediately apparent effect — Parkinson’s disease...
But the lead author of that study, Dr. Asa Abeliovich of the Columbia University Medical Center, said in an interview that "obviously there’s a bunch of solid epidemiological studies that link paraquat to Parkinson’s disease risk, so I think there’s definitely support for that." Dr. Abeliovich also said the paraquat studies underscored "that there are certain environmental factors that matter,"which interact "with genetic factors." [read more]