Investigators say it’s still not clear what caused a toxic chemical to leak from a valve at a suburban Houston plant, killing four workers and injuring a fifth.

BP Plc acted with gross negligence in setting off the biggest offshore oil spill in U.S.

A Grupo Mexico SAB chemical spill in two rivers looms as the worst environmental incident in Mexico’s recent mining history and damages could reach hundreds of millions of dollars, authorities said

Six months after a chemical spill fouled a vital West Virginia water supply, a fight is brewing over the tons of waste it left behind.

The removal of the Costa Concordia threatens to pollute the pristine waters around the Italian island of Giglio where the ship capsized two years ago, according to a new report which has angered lo

Rioters torched vehicles, equipment and buildings at Vale's nickel mine in the French Pacific territory of New Caledonia over the weekend, as anger boiled over about a chemical spill in a local riv

Santa Cruz on Tuesday became the first California county to ban fracking, the latest in a string of moves by local governments in the state to take a stand against the controversial oil and gas pro

Following a series of water-polluting incidents across the country, experts are calling for the creation of emergency response solutions and stricter supervision of tap water safety.

HANGZHOU - Fuyang city of East China's Zhejiang province suspended the supply of tap water at noon on Sunday after the Fuchun River, Fuyang's water source, was contaminated by a chemical spill.

The danger from a chemical leak into a Tayside river has passed, according to experts.