Stories by Brett Israel

Some experts say a decades-old estimate that six percent of cancers are due to environmental and occupational exposures is outdated and far too low

Smokers inhale live bacteria into their lungs, which could add to the reasons why they contract so many infections and chronic diseases, scientists say

Idling school buses spew tons of exhaust into the air, putting children at risk when they leave school at the end of each day. In New York City alone, idling vehicles emit as much pollution as nine million diesel trucks driving from the Bronx to Staten Island. But the city's laws requiring them to shut down their engines in school zones are poorly enforced.

Dolphins are swimming in waters tainted with triclosan, an ingredient in antibacterial soaps and other products, but they aren't winding up squeaky clean