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Diet, population size and the spread of modern humans into Europe
Accumulating carbon and nitrogen stable isotope data from fossil humans in Europe is pointing towards a significant shift in the range of animal resources exploited with the spread of modern humans into Europe 40,000 years ago. view more (2009-08-11)
Scientists discover cheap and environmentally friendly way to dispose of waste from nuclear power plants
Scientists from the University of Strathclyde, collaborating with an international team from Imperial College, Rutherford Appleton Laboratory(RAL), ITU (Karlsruhe) and the University of Jena, have successfully turned the radioactive isotope Iodine-129, a major waste product in the nuclear power industry, into the more friendly isotope Iodine-128... view more... (2003-08-13)
Cosmic dust in terrestrial ice
For the last 30,000 years, our planet has been hit by a constant rain of cosmic dust particles. view more (2006-07-28)
WHEELS WITHIN WHEELS: RARE ORBITAL ANOMALY MAY HAVE CAUSED GLOBAL COOLING 23 MILLION YEARS AGO
A rare coincidence of orbital cycles may have caused sudden global cooling 23 million years (Ma) ago, according to scientists, who used high resolution records and new techniques that allow astronomical calibration to be extended much further back in time. The late Oligocene to early Miocene Earth (20-26 Ma ago) experienced a complex climate... view more... (2001-06-21)
New laser technique may help find supernova
One single atom of a certain isotope of hafnium found on Earth would prove that a supernova once exploded near our solar system. view more (2009-08-12)
Friend or foe? - Viennese chemists optimise analysis of bones found at 7,000-year-old battlefield
Precise determination of strontium in bone material now makes it possible to distinguish between friend and foe on neolithic battlefields. A team of researchers at the University of Natural Resources and Applied Life Sciences, Vienna, has succeeded in using this sophisticated method to analyse skeleton finds. The interdisciplinary project,... view more... (2003-07-07)
Ancient Human Occupation of Britain
The University of Bradford's Department of Archaeological Sciences is taking part in a five-year study looking at when people first arrived in Britain, and the factors that led to their survival or local extinction. view more (2003-03-20)
Worldwide isotope shortage continues to pose significant challenges
SNM recently conducted a survey of nuclear pharmacies-pharmacies that supply the critical radioisotope Technetium-99m, which is used in more than 16 million nuclear medicine tests each year in the United States-to assess, anecdotally, the impact of the worldwide medical isotope shortage. view more (2009-09-09)
Frozen methane chunks not responsible for abrupt increases in atmospheric methane
Icy chunks of frozen methane and water are not responsible for the periodic increases in atmospheric methane recorded in Greenland ice cores. view more (2006-02-10)
SNM applauds House action to build medical isotopes reactor in the US
SNM applauds the U.S. House of Representatives for its passage of H.R. 3276-the American Medical Isotopes Production Act of 2009. view more (2009-11-09)
Early hominid first walked on two legs in the woods
Among the many surprises associated with the discovery of the oldest known, nearly complete skeleton of a hominid is the finding that this species took its first steps toward bipedalism not on the open, grassy savanna, as generations of scientists - going back to Charles Darwin - hypothesized, but in a wooded landscape. view more (2009-10-09)
Antarctic snow inaccurate temperature archive
According to Dutch researcher Michiel Helsen, annual and seasonal temperature fluctuations are not accurately recorded in the composition of the snow of Antarctica. His research into the isotopic composition of the Antarctic snow has exposed the complexity of climate reconstructions. view more (2006-02-16)
Made-to-order isotopes hold promise on science's frontier
Designer labels have a lot of cachet - a principle that's equally true in fashion and physics. view more (2008-05-09)
Sulfur signature changes thoughts on atmospheric oxygen
Ancient sediments that once resided on a lake bed and the ocean floor show sulfur isotope ratios unlike those found in other samples from the same time, calling into question accepted ideas about when the Earth's atmosphere began to contain oxygen. view more (2006-08-24)
Designer Isotopes Push the Frontier of Science
Designer labels have a lot of cachet, a principle that's equally true in fashion and physics. view more (2008-05-12)
Tests to reveal levels of depleted uranium in Army personnel
A test recently used by the UK government's Independent Depleted Uranium Oversight Board to detect exposure to UK troops by depleted uranium (DU) during the 1991 Gulf Conflict was developed by a team led by a University of Leicester geologist. view more (2007-03-06)
Isotope analysis reveals foraging area dichotomy for Atlantic leatherback turtles
The beaches of French Guiana constitute a major reproduction site for leatherback turtles. This sea turtle, although a protected species, is threatened by human activity: it ingests plastics, get accidentally caught in fishing nets, sees its egg-laying sites destroyed and its adults hunted illegally for their meat and their eggs. view more (2008-03-26)
Post-pandemic reforestation in New World helped trigger Little Ice Age, Stanford researchers say
The power of viruses is well documented in human history. Swarms of little viral Davids have repeatedly laid low the great Goliaths of human civilization, most famously in the devastating pandemics that swept the New World during European conquest and settlement. view more (2008-12-18)
Radioactive 'understudy' may aid medical imaging, drug development
Broadway stars have understudies. Now, an increasingly popular radioactive isotope has its own stand-in. Developed in part by researchers at the National Institute of Standards and Technology (NIST), the substance might ultimately improve medical imaging, speed up clinical trials of many drugs and facilitate efforts to develop more individualized... view more... (2008-01-10)
Cooling Off Periods
Research by a team of Cambridge scientists has provided new clues about the first dramatic cooling of the Earth's climate 34 million years ago. The team, based at the University of Cambridge's Department of Earth Sciences said that ocean temperature drops were apparently not responsible for the rapid formation of ice in Antarctica. Carrie Lear,... view more... (2000-01-12)
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