News tagged with lake sediment core
Mud manifests history of clear water in murky Minnesota duck depot Lake Christina
During peak migration days in the early 1900s, tens of thousands of canvasback ducks could be seen floating and diving on Minnesota's Lake Christina. Since midcentury, changes to the lake have diminished this grand, iconic ...
Mar 27, 2012 |
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Rapid changes in Greenland climate last 5,000 years, study finds
(PhysOrg.com) -- Abrupt average temperature changes of as much as 4 or 5 degrees Celsius over a few decades may have profoundly affected human civilization for cultures that occupied western Greenland over ...
Space & Earth / Earth Sciences
Jun 01, 2011 |
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Ancient catastrophic drought leads to question: How severe can climate change become?
How severe can climate change become in a warming world? Worse than anything we've seen in written history, according to results of a study appearing this week in the journal Science.
Space & Earth / Earth Sciences
Feb 24, 2011 |
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Study finds rising levels of dioxins from common soap ingredient in Mississippi River
Specific dioxins derived from the antibacterial agent triclosan, used in many hand soaps, deodorants, dishwashing liquids and other consumer products, account for an increasing proportion of total dioxins ...
May 18, 2010 |
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Arctic lake sediments show warming, unique ecological changes in recent decades
An analysis of sediment cores indicates that biological and chemical changes occurring at a remote Arctic lake are unprecedented over the past 200,000 years and likely are the result of human-caused climate ...
Space & Earth / Earth Sciences
Oct 19, 2009 |
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Professor hatches century-old eggs to study evolution
(PhysOrg.com) -- Suspending a life in time is a theme that normally finds itself in the pages of science fiction, but now such ideas have become a reality in the annals of science.
Jul 17, 2009 |
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Scientists Return from Expedition to Drill Beneath Frozen Russian Lake
(PhysOrg.com) -- A team of scientists from the United States, Germany, Russia and Austria has just returned from a six-month drilling expedition to a frozen lake in Siberia: Lake El'gygytgyn, "Lake E" for ...
Space & Earth / Earth Sciences
May 28, 2009 |
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The first evidence of pre-industrial mercury pollution in the Andes
The study of ancient lake sediment from high altitude lakes in the Andes has revealed for the first time that mercury pollution occurred long before the start of the Industrial Revolution.
May 18, 2009 |
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