WATCH: “Definitely harmful”: Scientists issue warning on glyphosate impacts to human health

US and European regulators should take urgent action to more tightly regulate glyphosate, the world’s most widely used weed killer, in light of strong scientific evidence that the pesticide can cause cancer and other health problems, a group of international scientists said last week at a symposium in Seattle.

Editor in chief Carey Gillam explains.

Read more: Scientists call for urgent action on glyphosate, citing strong links to cancer