"As global warming nudges temperatures higher, memories of the past offer an informal account of how the seasons have changed. A formal account comes from the USA National Phenology Network — phenology is the study of seasonal change — which reports the annual appearance of spring’s first leaves in the contiguous United States since 1981."

"Active in daylight during the Arctic summer and hibernating during the long winter nights, Alaska’s little brown bats are a unique population. Can their niche lives help them avoid white-nose syndrome?"

"Increasingly frequent marine heat waves are hammering away at the world’s coral reefs, scientists say."

"The world continues to hit alarming records. Last year was the warmest since record keeping began in 1850. And the 10 warmest years have all occurred in the past decade. The implications for life on Earth are vast. More than 1 million species are already at risk of extinction — a number that’s likely to increase with climate pressures."

"A bipartisan group of Colorado lawmakers are proposing legislation to reintroduce wolverines, one of the country’s rarest carnivores, into a state primed with deep snow and high mountains. The unprecedented move would be the first wolverine reintroduction in North America, and is part of an ongoing effort by Coloradans to restore the state’s native species."

"An unusual visitor to local waters has caused a stir among the region's marine scientists: a gray whale. Researchers with the New England Aquarium's aerial survey team on Tuesday reported spotting the whale 30 miles south of Nantucket during a flight on Friday — a sighting they said is "incredibly rare," considering the species has been extinct in the Atlantic Ocean for more than two centuries."

"The plan to bring back the woolly mammoth — or at least a version of it — is ambitious but raises hairy questions".

"A federal agency is asserting legal rights to waters that feed the Okefenokee Swamp and its vast wildlife refuge, setting up a new battle with a mining company seeking permits to withdraw more than 1.4 million gallons daily for a project that critics say could irreparably harm one of America’s natural treasures."

"One by one, the crate doors swing open and five Arctic foxes bound off into the snowy landscape. In the wilds of southern Norway, the newly freed foxes could struggle to find enough to eat, as the impacts of climate change make the foxes’ traditional rodent prey more scarce."