Federal officials have been told not to talk freely to the press or others who might ask questions EPA doesn't want to answer.

Featured blog: FDA accords some trans fats a "generally regarded as safe" designation.

Emerging data indicate that tiny and toxic particles polluting urban air chemically morph from hour by hour, depending on what other pollutants these particles encounter during journeys that can run hundreds of miles.

Federal climate policymakers should have a grounding in basic chemistry.

Uncooked fish can host detectable concentrations of potentially toxic chemicals — pollutants that cooking can make disappear,

Yet another news story baits us with the promise of reading about noxious toxins – and doesn't deliver.