(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 originally ...
Radioactive decay rates, thought to be unique physical constants and counted on in such fields as medicine and anthropology, may be more variable than once thought.
General Physics
Aug 31, 2010
37
3
(PhysOrg.com) -- One of the promises of nanoparticles as delivery agents for cancer therapeutics is that they will attack tumors while sparing healthy tissue from the damage normally associated with today's anticancer therapies. ...
Bio & Medicine
Apr 21, 2010
3
1
(PhysOrg.com) -- Lead-lead (Pb-Pb) dating is among the most widely used radiometric dating techniques to determine the age of really old things, such as the age of the Earth or the Solar System. However, recent advances in ...
Space Exploration
Jan 4, 2010
2
0
The Arctic Ocean is warming four times faster than the rest of the world's oceans, a trend that could potentially spill over to the rest of the world in the form of altered weather patterns and other climate consequences. ...
Earth Sciences
Jun 25, 2024
0
902
Not all of the material around us is stable. Some materials may undergo radioactive decay to form more stable isotopes. Scientists have now observed a new decay mode for the first time. In this decay, a lighter form of oxygen, ...
General Physics
Sep 4, 2023
3
336
In May 2020, some unusual rocks containing distinctive greenish crystals were found in the Erg Chech sand sea, a dune-filled region of the Sahara Desert in southern Algeria.
Space Exploration
Aug 30, 2023
1
129
Isotope ratios found in meteorites suggest that a supernova exploded nearby while the sun and solar system were still forming. But the blast wave from a supernova that close could have potentially destroyed the nascent solar ...
Astronomy
Jun 22, 2023
0
250
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
0
192
Scientists researching the origin of elements in our galaxy have new insights into how they are transported to Earth, thanks to a new study led by authors at the University of Hertfordshire in the U.K. and the Konkoly Observatory, ...
Planetary Sciences
Feb 20, 2023
0
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