News tagged with carbon isotopes

Dog skull dates back 33,000 years

If you think a Chihuahua doesn't have much in common with a Rottweiler, you might be on to something.

Other Sciences / Archaeology & Fossils

created Jan 23, 2012 | popularity 4.7 / 5 (15) | comments 3 | with audio podcast

Team finds natural reasons behind nitrogen-rich forests

(PhysOrg.com) -- Many tropical forests are extremely rich in nitrogen even when there are no farms or industries nearby, says Montana State University researcher Jack Brookshire.

Space & Earth / Earth Sciences

created Jan 16, 2012 | popularity 4.8 / 5 (6) | comments 1 | with audio podcast

Industrialization weakens important carbon sink

Australian scientists have reconstructed the past six thousand years in estuary sedimentation records to look for changes in plant and algae abundance. Their findings, published in Global Change Biology, show a ...

Space & Earth / Environment

created Nov 29, 2011 | popularity 5 / 5 (1) | comments 1

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

created Oct 13, 2011 | popularity 5 / 5 (3) | comments 3 | with audio podcast

Global warming: New study challenges carbon benchmark

The ability of forests, plants and soil to suck carbon dioxide (CO2) from the air has been under-estimated, according to a study on Wednesday that challenges a benchmark for calculating the greenhouse-gas ...

Space & Earth / Earth Sciences

created Sep 28, 2011 | popularity 4.4 / 5 (12) | comments 28

Cell dysfunction linked to obesity and metabolic disorders

By measuring the radioactive isotope carbon-14, scientists at Karolinska Institutet have revealed an association between lipid cell dysfunction and diseases such as obesity, diabetes and blood lipid disorders. The study, ...

Medicine & Health / Research

created Sep 26, 2011 | popularity not rated yet | comments 0 | with audio podcast

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

created Jul 22, 2011 | popularity 4.4 / 5 (21) | comments 32 | with audio podcast report

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. ...

Biology / Ecology

created Jun 23, 2011 | popularity not rated yet | comments 0

Physicists explain the long, useful lifetime of carbon-14

The long, slow decay of carbon-14 allows archaeologists to accurately date the relics of history back to 60,000 years.

Physics / General Physics

created May 26, 2011 | popularity 4.8 / 5 (14) | comments 33 | with audio podcast

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

created May 10, 2011 | popularity 4.5 / 5 (14) | comments 24 | with audio podcast report

Team studies Earth's recovery from prehistoric global warming

(PhysOrg.com) -- The Earth may be able to recover from rising carbon dioxide emissions faster than previously thought, according to evidence from a prehistoric event analyzed by a Purdue University-led team.

Space & Earth / Earth Sciences

created Apr 21, 2011 | popularity 4.7 / 5 (6) | comments 23 | with audio podcast

New study illustrates shifting biomes in Alaska

A new study released today in the EarlyView of Ecology Letters addresses forest productivity trends in Alaska, highlighting a shift in biomes caused by a warming climate. The findings, conducted by scientists at the Woods ...

Space & Earth / Environment

created Feb 21, 2011 | popularity 3 / 5 (2) | comments 0

Paper archives reveal pollution's history

A new source of climate records is as close as the nearest university library: Back issues of magazines reveal the rise in atmospheric CO2 from burning fossil fuels.

Space & Earth / Earth Sciences

created Feb 08, 2011 | popularity 2.3 / 5 (3) | comments 2

Building cement 'prison' for old radioactive waste

The Cold War ended long ago, but its radioactive legacy still lingers in the water and soil of the western United States. Between 1950 and 1990, nuclear weapons materials production and processing at several ...

Space & Earth / Environment

created Jan 11, 2011 | popularity 4.3 / 5 (3) | comments 2

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

created Nov 10, 2010 | popularity 4.3 / 5 (9) | comments 0 | with audio podcast