News tagged with isotopes of carbon
Tasting carbon with WAFT'ed light: New instrument analyzes tiny samples at low pressure and temperature
(Phys.org) -- When delving into the nuances of carbon dioxide, a new instrument designed by scientists at Pacific Northwest National Laboratory "sips" the sample and reveals information about the source of ...
Chemistry / Analytical Chemistry
Apr 09, 2012 |
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New technologies challenge old ideas about early hominid diets
New assessments by researchers using the latest high-tech tools to study the diets of early hominids are challenging long-held assumptions about what our ancestors ate, says a study by the University of Colorado ...
Other Sciences / Archaeology & Fossils
Oct 13, 2011 |
5 / 5 (3) |
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Paleoecologists suggest mass extinction due to huge methane release
(PhysOrg.com) -- Micha Ruhl and colleagues from the University of Copenhagen's Nordic Center for Earth Evolution have published a paper in Science where they contend that the mass extinction that occurred at the ...
Space & Earth / Earth Sciences
Jul 22, 2011 |
4.4 / 5 (21) |
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Discovering lost salmon at sea
Where Atlantic salmon feed in the ocean has been a long-standing mystery, but new research led by the University of Southampton shows that marine location can be recovered from the chemistry of fish scales. ...
Jun 23, 2011 |
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Neanderthals died out earlier than originally believed
(PhysOrg.com) -- According to a newly released report in The Proceedings of the National Academy of Sciences, a newly refined method of radiocarbon dating has found that Neanderthals died off much earlier than o ...
Other Sciences / Archaeology & Fossils
May 10, 2011 |
4.5 / 5 (14) |
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Fossil record receives new timeline
Beginning around 542 million years ago, a profusion of animals with shells and skeletons began to appear in the fossil record. So many life forms appeared during this time that it is often referred to as the ...
Space & Earth / Earth Sciences
Nov 10, 2010 |
4.3 / 5 (9) |
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Scientists link ocean acidification to prehistoric mass extinction
(PhysOrg.com) -- New evidence gleaned by analyzing calcium embedded in Chinese limestone suggests that volcanoes, which spewed massive amounts of carbon dioxide into the atmosphere for a million years, caused the biggest ...
Space & Earth / Earth Sciences
Apr 27, 2010 |
4.5 / 5 (13) |
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Giant fossil Prototaxites: Unraveling a 400-million-year-old mystery
Contradictions and puzzles surround the giant fossil Prototaxites. The fossils resemble tree trunks, and yet they are from a time before trees existed. The stable carbon isotope values are similar to those of fungi, but th ...
Other Sciences / Archaeology & Fossils
Feb 10, 2010 |
4 / 5 (10) |
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Supervolcano eruption -- in Sumatra -- deforested India 73,000 years ago
A new study provides "incontrovertible evidence" that the volcanic super-eruption of Toba on the island of Sumatra about 73,000 years ago deforested much of central India, some 3,000 miles from the epicenter, ...
Space & Earth / Earth Sciences
Nov 23, 2009 |
4.5 / 5 (17) |
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New isotope cluster could lead to better understanding of atmospheric carbon dioxide
(PhysOrg.com) -- A team of researchers has discovered an unexpected concentration of a certain isotopic molecule in parts of the stratosphere that could have implications for understanding the carbon cycle ...
Space & Earth / Earth Sciences
Jul 14, 2009 |
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Diet secrets of 'the Royals' -- Elephant tail hair isotopes show cattle out-munch pachyderms
Two weeks after the rains begin, an elephant family named "the Royals" usually switches to a grass diet to bulk up for pregnancy and birth. But when they wandered off their African reserve one rainy season, ...
Apr 13, 2009 |
5 / 5 (3) |
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Carbon capture has a sparkling future
(PhysOrg.com) -- New research shows that for millions of years carbon dioxide has been stored safely and naturally in underground water in gas fields saturated with the greenhouse gas. The findings - published ...
Space & Earth / Earth Sciences
Apr 01, 2009 |
2.6 / 5 (7) |
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New test for detecting fake organic milk
Scientists in Germany are reporting development of a new, more effective method to determine whether milk marketed as "organic" is genuine or just ordinary milk mislabeled to hoodwink consumers. Their report ...
Mar 02, 2009 |
3.8 / 5 (4) |
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