Pollution

Abandoned mines in Colorado and across the West are contaminating many streams with toxic discharges.

As environmentalists flag the hydrofracking gas-drilling method as a new threat to the Susquehanna River, some basin residents say authorities have still not fixed an old threat: acid mine drainage.

"Democratic U.S. lawmakers have asked Congressional panels to look into whether Koch, an energy company led by brothers who are powerhouses in conservative politics, will benefit if the Obama administration approves a $7 billion pipeline to bring crude from Canada into the United States."

The ugly truth in Massachusetts is this: after some three decades and $1 billion worth of Superfund cleamup work at scores of toxic sites, nobody knows whether they are still poisoning people.

"The operators of at least 70 facilities that store coal ash , the waste byproduct of coal-burning power plants, have crafted safety plans to better prevent the sort of catastrophic accident that flooded Tennessee properties with toxic sludge three years ago."

"WOODSTOCK, Ill. -- The paving industry closely is watching McHenry County as its officials consider a ban on toxic asphalt sealants commonly used on driveways."

"Environmental regulators on Thursday directed six natural gas drillers to disclose how they dispose of or recycle waste water in Pennsylvania after a recent Chesapeake Energy Corp accident."