European Colonists Dramatically Increased North American Erosion Rates

Everything wears away in time, but human activities like farming can dramatically accelerate natural erosion rates. The arrival of European colonists in North America, for instance, sped up the rate of erosion and river sediment accumulation on the continent by a factor of 10, according to a new study. An international team of […]

Harbor porpoises on the decline in the German North Sea

IMAGE: Populations of harbor porpoises were surveyed from a plane view more  Credit: D. Nachtsheim The North Sea is a heavily trafficked area, with major shipping routes crossing its waters, and fisheries, offshore oil rigs, and wind farms populating its waves. All this activity inevitably has an effect on marine wildlife, and scientists are particularly interested […]

Harbor porpoises on the decline in the German North Sea

Populations of harbor porpoises were surveyed from a plane. Credit: D. Nachtsheim The North Sea is a heavily trafficked area, with major shipping routes crossing its waters, and fisheries, offshore oil rigs, and wind farms populating its waves. All this activity inevitably has an effect on marine wildlife, and scientists are particularly interested in how […]

New species added to species-rich North Carolina

Carolina Sandhills salamander (Eurycea arenicola) in life from North Carolina. Credit: Todd Pusser Already possessing more salamander species than any other state in the country with 63, North Carolina has just added one more to make it 64. The aptly named Carolina Sandhills Salamander (Eurycea arenicola) is found in association with springs, seepages and small […]

The climate changed rapidly alongside sea ice decline in the north

‘We have investigated how the sea ice cover changed during the last glacial period in both marine cores and ice cores’, Helle Astrid Kjær, Associate professor. Credit: University of Copenhagen Researchers from the Niels Bohr Institute, University of Copenhagen have, in collaboration with Norwegian researchers in the ERC Synergy project, ICE2ICE, have shown that abrupt […]

The climate changed rapidly alongside sea ice decline in the north — ScienceDaily

Researchers from the Niels Bohr Institute, University of Copenhagen have, in collaboration with Norwegian researchers in the ERC Synergy project, ICE2ICE, shown that abrupt climate change occurred as a result of widespread decrease of sea ice. This scientific breakthrough concludes a long-lasting debate on the mechanisms causing abrupt climate change during the glacial period. It […]

Lost islands beneath the North Sea survived a mega-tsunami 8,000 years ago

Some ancient islands now submerged beneath the North Sea survived a devastating tsunami about 8,000 years ago and may have played a key part in Britain’s human prehistory, according to a new study. The research suggests some parts of the ancient plain known as Doggerland — which connected Great Britain with the Netherlands — withstood […]

North America’s biggest salmon run may no longer be in danger

Sockeye salmon migrating up a riffle. (Jonny Armstrong /) This story originally featured on Outdoor Life. Last Wednesday the U.S. Army Corps of Engineers announced its rejection of the Pebble Limited Partnership’s permit application to develop a copper-molybdenum-gold mine in southwest Alaska. The proposed project would have been located 200 miles southwest of Anchorage, near […]

An Extraordinary Winter in the Polar North

The winter of 2019–2020 in the Northern Hemisphere was one of extremes. The massive region of cold polar air encircled by stratospheric winds, known as the stratospheric polar vortex, was particularly strong, keeping the frigid air whirling above the polar region and leading to a very mild winter in many regions farther south. […]

Botanists save rare North American plants to preserve biodiversity

No plant should have to end this way. North America’s various beach plums bear purple-blue, cherry-sized fruits that make for a beloved New England jelly. The small trees’ tolerance for salty, wind-blasted shores impresses biologists. But even a beach plum has limits. One of the plum’s distinctive forms, named in 1897 for physician Charles B. […]