Tantalum is one of the rarest elements and has multiple stable isotopes. The least abundant tantalum isotope, Ta-180 is found naturally in a long-lived excited state, a feature unique to this isotope. In excited states, a ...
General Physics
Mar 18, 2024
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44
Like something out of "CSI" or "Bones," researchers at Arizona State University are working to solve the mysteries of unidentified human remains - and just as on those TV shows, science plays a key role.
Archaeology
Apr 15, 2015
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63
Millions of years ago, giant sharks three times larger than today's great whites stalked the world's ocean. They're long gone now, but occasionally, someone walking on a beach spots an odd triangular shape in the sand. On ...
Paleontology & Fossils
Jul 21, 2022
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622
Low-to-mid latitude land surfaces at low elevation cooled on average by 5.8 ± 0.6 degrees C during the Last Glacial Maximum (LGM), based on an analysis of noble gases dissolved in groundwater, according to a new study published ...
Earth Sciences
May 12, 2021
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452
The largest living animal, the blue whale (Balaenoptera musculus) which averages about 27 meters in length, has slowly recovered from whaling only to face the rising challenges of global warming, pollution, disrupted food ...
Plants & Animals
Mar 20, 2024
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40
(PhysOrg.com) -- Rare-earth metals are a series of elements that represent one of the final frontiers of chemical exploration. The vigorous reactivity of these substances, however, has made it difficult for researchers to ...
Materials Science
Apr 15, 2011
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0
Together with an international team, Senckenberg scientist Hervé Bocherens studied the fossilized teeth of the carnivorous dinosaur Tarbosaurus bataar. Based on stable isotopes, the researchers were able to draw inferences ...
Archaeology
Jun 26, 2019
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0
Help to solve one of the world's most pressing dilemmas—how to feed the growing population while protecting the planet—may be at hand from a surprising ally—the sea cucumber.
Ecology
Jul 21, 2022
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23
Studying radioactive materials is very difficult due to the potential health risks they pose to scientists. Expense is also a major barrier, with some radioisotopes costing more than $10,000 per microgram (or $10 billion ...
Analytical Chemistry
Jun 5, 2023
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192
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 Boulder and ...
Archaeology
Oct 13, 2011
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