The use of pesticides has decreased in the US by more than 40 percent since 1992, but the emergence of more-potent chemicals means that they are far more damaging to many species.

The US lacks standardized methods to assess products for potency and safety. That’s a big problem for the labs tasked with doing the testing.

The physician, toxicologist, and expert witness drew attention to health issues caused by radiation and toxic chemicals.

The agency argues that chlorpyrifos is one of few “cost-effective options” for controlling certain farm pests.

The companies that market the products, Syngenta, Valent, and Bayer, are allowed to sell existing stock of the chemicals until 2020.

The state’s Environmental Protection Agency says that evidence of the chemical’s link to neurological problems in children is overwhelming.

Flupyradifurone, sold as Sivanto, is reported to have greater lethal and sublethal effects on honey bees when combined with a common fungicide.

Scrutinizing a company’s study on a widely used pesticide, chlorpyrifos, academic researchers find shortcomings in analyses and public disclosures of results.

A high-tech approach to monitoring bee activity inside the nest reveals how the neonicotinoid imidacloprid impairs colony growth.

Sulfoxaflor, an alternative insect-killer to older chemicals that decimate pollinators, turns out to kneecap colonies.

The resulting lost protein, PON1, breaks down organophosphates in land mammals.

The pesticides, which studies show are harmful to bees, will be prohibited in open fields by the end of 2018.

Researchers pinpoint a protein that can metabolize at least one of the insecticides, highlighting a route to identifying compounds that are friendlier to the critical pollinators.

Glyphosate, the active ingredient in Roundup, is designed to be toxic to plants, but scientists observe some untoward effects on animals in the lab. 

Organophosphates jeopardize dozens of species, a federal review finds.

The approval of the Roundup ingredient follows an extensive debate amidst conflicting evidence over the health effects of the world’s most popular weed killer. 

The report provides evidence that goes against concerns that Monsanto’s popular herbicide, Roundup, is carcinogenic. 

Women who ate more produce known to harbor pesticides were less likely to succeed with fertility treatment than women who ate fewer of these fruits and vegetables.

A group evaluating glyphosate’s cancer risk omitted evidence that the chemical is not carcinogenic.