8 shipwrecks that could sink the environment

Which has more germs: Doctors' hands, or their stethoscopes?

New York City releasing gases to track air flow

New study finds Hurricane Sandy responsible for spilling 11 billion gallons of sewage

IKEA's contamination woes continue with pork-tainted moose lasagna

Horse meat found in IKEA meatballs

Private wells across U.S. contaminated with arsenic

EPA takes on trailer park owner over water testing

Poor timing may doom offshore drilling plan in Southeast

The rising threat of radon

Just say no to 'Dirty Gold'

Aging sewers are polluting the nation's waterways