Federal suit brought by public health groups alleges agency’s science shows human risks and harm to endangered species

Public health groups are suing the US Environmental Protection Agency over the reapproval of two toxic herbicides made with an active ingredient in Agent Orange, a chemical weapon deployed by the US to destroy vegetation in the Vietnam war, and which caused huge health problems among soldiers and Vietnamese residents.

The federal suit alleges the EPA’s science shows the human health risks and harm to endangered species associated with widely spreading the chemical on US cropland, but the agency failed to properly calculate those risks during the reapproval process. The herbicide is also prone to damaging non-GMO crops or vegetation on neighboring fields.