Mustard gas blistered men’s bodies on the battlefield, but paved the way for cancer-fighting drugs.

Researchers teamed up with a woman with a keen sense of smell to identify telling differences between healthy people and those with the neurodegenerative disease.

Scientists and advocacy groups criticize new guidelines that could exclude some academic studies during toxicity reviews.

Reducing the evaluation to only direct contact, rather than including environmental exposures, could leave damaging substances on the market, critics say.

Vanessa Allen Sutherland will resign next month, leaving the agency with just three members of what should be a five-person board.

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

Following approval by Congress, the president will decide on an update the 1976 Toxic Substances Control Act.

A researcher challenges the UK government’s conclusion that neonicotinoids aren’t that bad for pollinators.

For the first time, researchers have mimicked biological evolution using chemicals instead of living organisms.