"Children's toys carrying the Barbie and Disney logos have turned up with high levels of lead in them, according to a California-based advocacy group -- a finding that may give consumers pause as they shop for the holiday season."

A new study suggests that even women who try hard to avoid worrisome chemicals may fail to keep them out of their bodies. Environmental exposure seems to be the culprit. And once the chemicals are in the blood of pregnant women, their fetuses may be exposed, too.

"The Environment Report's Shawn Allee investigates Dow Chemical and dioxin contamination in mid-Michigan. Central Michigan has lived with toxic dioxin pollution in two major rivers and Saginaw Bay for decades. Shawn looks at who's been affected, why it's taken so long to clean up, how the science behind dioxin has played into this, and what the cleanup means for the rest of the country."

"Smaller than a virus and used in more than 200 consumer products, silver nanoparticles can kill and mutate fish embryos, new research shows."

As U.S. chlorine plants convert to cleaner technology, they are leaving behind large stocks of mercury. There is a danger that mercury will find its way to dangerous and polluting uses on the global market. Efforts to ban mercury export have not been effective.

"Three new studies show a link between Scotchgard-type chemicals in ground water and high cholesterol in human blood. 3M says its studies have shown no such a link."

"A nonprofit organization that monitors the health of the Potomac River said Wednesday that a condition causing abnormalities in fish should serve as an urgent warning to rehabilitate the waterway that provides 90 percent of the D.C. area's drinking water."

"Exposure to high levels of a controversial chemical found in thousands of everyday plastic products appears to cause erectile dysfunction and other sexual problems in men, according to a new study published Wednesday."

Some Salinas Valley residents worry that the drift of pesticides sprayed on fields near schools may endanger children, despite some controls.