Bedbugs, after almost vanishing from the U.S. for decades, have come back bigtime as The Bug That Ate New York. EPA and CDC have offered some advice on getting rid of them. But scientists know very little about them.

As Vietnam veterans age, there has been an explosion of claims for disabilities related to Agent Orange. It could cost the taxpayers $42 billion over the next 10 years, and it raises questions about the government's failure to address Agent Orange risks before using it.

"With prayers and the solemn tolling of bells, but also with second-line parades and the drumming of Mardi Gras Indians, New Orleanians throughout the region on Sunday took stock of their rebuilt lives in the five years since the worst event in the region's history, and promised each other to keep the recovery going."

"No more sunny side up. No more eggs Benedict. No more almost-set scrambled eggs. After of one of the largest egg recalls on record, critics say the egg industry is resorting to the worst tactic of all: blaming the victim."

"The U.S. National Hurricane Center was monitoring three tropical systems in the Atlantic Ocean on Friday, and computer models still showed all three steering clear of key oil and gas producing areas in the Gulf of Mexico."

"Chesapeake oysters are a succulent treat that for centuries have been loved almost to extinction.  But some scientists and business people are making headway in bringing back the bivalve, for the sake of oyster lovers and the bay."

"On Thursday, some of the country's most respected environmental groups -- in the midst of their biggest political fight in two decades -- sent a group of activists to Milwaukee with a message. We're losing."

"A release of of toxic anhydrous ammonia from a refrigeration plant in Theodore, Alabama that sent more than 130 people to hospital has drawn investigators from three federal agencies and several state agencies to the scene."

"Edmonton -- A study set to be published on Monday has found elevated levels of mercury, lead and eleven other toxic elements in the oil sands'  main fresh water source, the Athabasca River, refuting long-standing government and industry claims that water quality there hasn't been affected by oil sands development."

"The monitoring is at its lowest level since becoming law more than a decade ago, putting swimmers, surfers and divers at greater risk of exposure to contaminated water, a Times investigation shows."