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EarthScope’s Transportable Array now Spans Alaska, the Last Frontier

By Cheryl Dybas | NSF, Perle Dorr | IRIS on Oct 13, 2017   Featured, North Slope/Northwest Alaska, The Arctic and Alaska Science  

EarthScope’s Transportable Array now Spans Alaska, the Last Frontier

Seismic station A19K, it’s called, and it’s now at the edge of an abandoned airstrip far above the Arctic Circle. The nearest population center is 127 miles northeast in Utqiaġvik (formerly known as Barrow), the northernmost city in the United States. What a way to celebrate Earth Science Week, Oct. 8-14, 2017. The seismic station […]

Scientists Discover Fossil of Dinosaur Ancestor with Surprising Croc-Like Appearance

By Cheryl Dybas | NSF on Apr 13, 2017   Featured, Science/Education  

Scientists Discover Fossil of Dinosaur Ancestor with Surprising Croc-Like Appearance

Scientists have long wondered what the earliest dinosaur relatives looked like. Most assumed they would resemble miniature dinosaurs, about the size of chickens, and walk on two legs. The discovery of Teleocrater rhadinus, however, has forced scientists to reassess their ideas. Based on a fossil unearthed in southern Tanzania, these early relatives were carnivorous animals […]

Volcanic Eruption Masked Acceleration in Sea Level Rise

By Cheryl Dybas | NSF, Laura Snider | NCAR on Aug 15, 2016   Featured, Science/Education  

Volcanic Eruption Masked Acceleration in Sea Level Rise

The cataclysmic 1991 eruption of Mount Pinatubo in the Philippines masked the full impact of greenhouse gases on accelerating sea level rise, according to a new study. “These scientists have disentangled the major role played by the volcanic eruption of Mount Pinatubo on trends in global mean sea level,” said Anjuli Bamzai, program director in […]

Low-Oxygen ‘Dead Zones’ in North Pacific Linked to Past Ocean Warming

By Cheryl Dybas | NSF, Mark Floyd | OSU on Nov 20, 2015   Featured, Science/Education  

Low-Oxygen ‘Dead Zones’ in North Pacific Linked to Past Ocean Warming

A new study has found a link between abrupt ocean warming at the end of the last ice age and the sudden onset of low-oxygen, or hypoxic, conditions that led to vast marine dead zones. Results of the research, which was funded by the National Science Foundation (NSF), are published today in the journalNature. “This […]

Warming Waters Contributed to the Collapse of New England’s Cod Fishery

By Cheryl Dybas | NSF, Elijah Miller | Gulf of Maine Research Institute on Nov 6, 2015   At Sea, Featured, Science/Education  

Warming Waters Contributed to the Collapse of New England’s Cod Fishery

For centuries, cod were the backbone of New England’s fisheries and a key species in the Gulf of Maine ecosystem. Today, cod stocks are on the verge of collapse, hovering at 3-4 percent of sustainable levels. Even painful cuts to the fishery have failed to slow this rapid decline, surprising both fishers and fisheries managers. Now […]

Big Dinosaurs Steered Clear of the Tropics

By Cheryl Dybas | NSF, Joe Rojas-Burke | University of Utah on Jun 18, 2015   Featured, Science/Education  

Big Dinosaurs Steered Clear of the Tropics

For more than 30 million years after dinosaurs first appeared, they remained inexplicably rare near the equator, where only a few small-bodied meat-eating dinosaurs made a living. The long absence at low latitudes has been one of the great, unanswered questions about the rise of the dinosaurs. Now the mystery has a solution, according to […]

Ocean Acidification a Culprit in Commercial Shellfish Hatcheries’ Failures

By Cheryl Dybas | NSF, Mark Floyd | OSU on Dec 18, 2014   At Sea, Featured, Science/Education  

Ocean Acidification a Culprit in Commercial Shellfish Hatcheries’ Failures

The mortality of larval Pacific oysters in Northwest hatcheries has been linked to ocean acidification. Yet the rate of increase in carbon dioxide in the atmosphere and the decrease of pH in near-shore waters have been questioned as being severe enough to cause the die-offs. Now, a new study of Pacific oyster and Mediterranean mussel […]

Scientists Discover Fossil of Bizarre Groundhog-Like Mammal on Madagascar

By Cheryl Dybas | NSF, Greg Filiano | Stony Brook University on Nov 6, 2014   Featured, Science/Education  

Scientists Discover Fossil of Bizarre Groundhog-Like Mammal on Madagascar

Paleontologists have discovered an almost complete skull of a previously unknown mammal that likely resembled a large modern-day groundhog and lived alongside dinosaurs. The species, found on Madagascar, is shaking up theories of early mammal evolution and diversity. Stony Brook University paleontologist David Krause led the research team, which reports its findings in today’s issue […]

New Tracers can Identify Frack Fluids in the Environment

By Cheryl Dybas | NSF, Time Lucas | Duke University on Oct 20, 2014   Featured, Science/Education  

New Tracers can Identify Frack Fluids in the Environment

Scientists have developed new geochemical tracers that can identify hydraulic fracturing flowback fluids that have been spilled or released into the environment. The tracers have been field-tested at a spill site in West Virginia and downstream from an oil and gas brine wastewater treatment plant in Pennsylvania. “By characterizing the isotopic and geochemical fingerprints of […]

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