"Vegetation change underway in northern forests as a result of climate change creates feedback loop that prompts more warming, scientists say."

"A Naval training exercise that included an underwater blast off San Diego's coast has been linked to at least three dolphin deaths earlier this month, prompting a probe into whether the military violated the federal law that protects marine mammals."

"A wrecked ship is threatening to cause an environmental disaster on an island which is home to endangered penguins, conservationists warned today."

"The U.S. government said on Friday it had struck a deal with wildlife advocates to remove some 1,200 wolves in Idaho and Montana from the endangered species list."

"The mysterious collapse of honey-bee colonies is becoming a global phenomenon, scientists working for the United Nations have revealed."

"The federal government has agreed to step up its efforts to force freighters sailing on the Great Lakes to begin treating their biologically contaminated ballast water discharges like any other industrial pollutant."

"Seven decades after the last reported sighting of the eastern cougar, the federal Fish and Wildlife Service declared it extinct Wednesday and recommended that it be removed from the nation's endangered species list."

"Rising temperatures, drought and the spread of destructive insect pests will shrink the North American range of the lodgepole pine nearly 10 percent by 2020, a new study finds."