"Significant levels of the world's most-used herbicide have been detected in air and water samples from two U.S. farm states, government scientists said on Wednesday, in groundbreaking research on the active ingredient in Monsanto Co's Roundup."

"Although sleazy 'scratcher shops' with unskilled artists and dubious safety records are becoming a thing of the past, scientists are growing concerned about what's going into tattooed skin, not just how it got there."

"Pennsylvania is one of only four states with regulations in place requiring drillers to disclose on a well-by-well basis the additives and chemicals used in fracturing fluid injected deep underground into oil and natural gas wells. But the state is the only one not to post the data on the Internet."

"When it comes to the safety of dyeing food, the one true shade is gray.

Artificial colorings have been around for decades, and for just about as long, people have questioned whether tinted food is a good idea. In the 1800s, when merchants colored their products with outright poisons, critics had a pretty good case. Today’s safety questions, though, aren’t nearly so black and white — and neither are the answers.

"Five of the 57 ingredients in dispersants approved by the U.S. Environmental Protection Agency for use on oil spills are linked to cancer, finds a new research report based on data obtained through a Freedom of Information Act request by environmental groups on the Gulf of Mexico."

"A sudden collapse of the government of Syrian President Bashar al-Assad could mean a breakdown in controls over the country’s weapons, U.S. officials and weapons experts said in interviews. But while Libya’s chemical arsenal consists of unwieldy canisters filled mostly with mustard gas, the World War I-era blistering agent, Syria possesses some of the deadliest chemicals ever to be weaponized, dispersed in thousands of artillery shells and warheads that are easy to transport."

"LONDON—The illegal trade in counterfeit pesticides has grown into a multimillion-euro industry in Europe, putting consumers' lives and farmers' livelihoods at risk as unregulated and often toxic chemicals enter the food chain.

"ST. JOHN'S — Canada's doctors are condemning the Harper government for its 'shameful' decision to block listing asbestos as a hazardous product.

Delegates to the Canadian Medical Association's general assembly voted nearly unanimously — 99 per cent — in support of a motion Wednesday opposing the federal government for contesting the international designation of chrysotile asbestos as a hazardous substance.

"Koch argues that tough restrictions on petrochemicals aren’t necessary because there hasn’t been a terrorist attack here since 9/11."

"Nearly 1,600 children age 5 and younger live close enough to an airport in Brevard County to be at risk from leaded gasoline used by small piston planes and helicopters."