"Eastern cougars that once prowled North America from Michigan to South Carolina were officially declared extinct and removed from the U.S. endangered species list on Monday, eight decades after the last confirmed sighting of the wild feline predator."

"Early on Saturday, amid blowing snow and temperatures at minus 13 Fahrenheit, three caribou were blindfolded, earplugged and bundled into a helicopter on an island in Lake Superior."

"It’s hard to miss a musk ox: It looks like a buffalo decked out in a hairy fur coat. And yet this easy-to-spot giant, which lives on tundras from Siberia to Greenland, is still surprisingly mysterious."

"Transport Canada has lifted the speed limit in the Gulf of St. Lawrence, five months after the restriction was put in place to prevent further right whale deaths."

"Heavy hitters and activists have lined up in a fight over Fish and Wildlife Service mitigation policies, showcasing how just a few words can expose very high stakes."

"Scientists say snow seasons like the U.S. West is experiencing now will become more common as global temperatures rise, and economic costs will go up, as well."

"A group of former Interior Department officials from both major parties who served under the past eight presidents pressed the Trump administration Wednesday to reconsider its move to ease restrictions against killing birds."

"The Canada lynx, a wild cat found in just a handful of mostly western U.S. states as well as Canada, no longer needs federal protection from extinction in the Lower 48 states, U.S. wildlife officials said on Thursday, sparking an outcry from conservationists."

"Male sea turtles are disappearing from Australia’s Great Barrier Reef."