Scientists at the Centers for Disease Control are trying to develop a new product that both repels and kills insects. Called nootkatone, it is found in Alaska yellow cedar trees and citrus fruit. Consumers may prefer it to DEET, and that may mean a chance to lower the chances of insect-borne disease.

"The U.S. EPA is considering a ban or restriction on consumer insulation and sealant products containing a family of chemicals known as diisocyantes."

"If you didn’t know, there are about 70,000 gallons of oil and industrial waste pooling beneath the city of Pittston. That’s about 10 of the petroleum tankers you’ve seen at your local gas station."

"Over the years, rat poison has spared [California] residents untold filth and disease. But a new generation of highly toxic, long-lasting poisons is killing not only rats, mice and ground squirrels, but whatever feeds on them, too."

"Wild rice is sacred to the Ojibwe of Minnesota, but that may not be enough to protect it from the promise of jobs that a new copper-nickel mining industry would bring to the state."

"With the Obama administration moving to impose tougher limits on toxic air pollution as well as emissions that lead to smog and acid rain, it's betting the private sector can add a new technology to the utility industry's arsenal."

"The federal Environmental Protection Agency and the New York City Council speaker, Christine C. Quinn, are both calling for replacing school light fixtures that are leaking PCBs in five years or less, putting more pressure on the Bloomberg administration to speed up its planned time line of 10 years."

"U.S. EPA's long-awaited study of formaldehyde's toxicity got panned today by a National Academy of Sciences' panel that sharply disagreed with the agency's conclusions and declared the effort in need of 'substantial revision.'"

"Critics say it's a chemical that could cause infertility or cancer, while others see it speeding the growth of super weeds and causing worrying changes to plants and soil. Backers say it is safe and has made a big contribution to food production."