News tagged with proceedings of the national academy of sciences
Human ancestors used fire one million years ago, archaeologist find
An international team led by the University of Toronto and Hebrew University has identified the earliest known evidence of the use of fire by human ancestors. Microscopic traces of wood ash, alongside animal ...
Other Sciences / Archaeology & Fossils
Apr 02, 2012 |
4.8 / 5 (43) |
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Russians revive Ice Age flower from frozen burrow
It was an Ice Age squirrel's treasure chamber, a burrow containing fruit and seeds that had been stuck in the Siberian permafrost for over 30,000 years. From the fruit tissues, a team of Russian scientists ...
Feb 20, 2012 |
4.9 / 5 (39) |
31
Upper class people more likely to cheat: study
The upper class has a higher propensity for unethical behavior, being more likely to believe – as did Gordon Gekko in the movie "Wall Street" – that "greed is good," according to a new study from ...
Other Sciences / Social Sciences
Feb 27, 2012 |
4.3 / 5 (45) |
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Immortal worms defy aging
Researchers from The University of Nottingham have demonstrated how a species of flatworm overcomes the ageing process to be potentially immortal.
Feb 27, 2012 |
4.8 / 5 (38) |
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Researchers find simple and cheap way to mass-produce graphene nanosheets
Mixing a little dry ice and a simple industrial process cheaply mass-produces high-quality graphene nanosheets, researchers in South Korea and Case Western Reserve University report.
Nanotechnology / Nanomaterials
Mar 26, 2012 |
5 / 5 (33) |
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New finding may hold key to Gaia hypothesis of Earth as living organism
(Phys.org) -- Is Earth really a sort of giant living organism as the Gaia hypothesis predicts? A new discovery made at the University of Maryland may provide a key to answering this question. This key of sulfur ...
Space & Earth / Earth Sciences
May 15, 2012 |
3.4 / 5 (33) |
164
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Study supports theory of extraterrestrial impact
A 16-member international team of researchers that includes James Kennett, professor of earth science at UC Santa Barbara, has identified a nearly 13,000-year-old layer of thin, dark sediment buried in the ...
Space & Earth / Earth Sciences
Mar 05, 2012 |
4.7 / 5 (23) |
38
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Scientist suggests life began in freshwater pond, not the ocean
(PhysOrg.com) -- For most everyone alive today, it's almost a fundamental fact. Life began in the ocean and evolved into all of the different organisms that exist today. The idea that this could be wrong causes ...
Space & Earth / Earth Sciences
Feb 14, 2012 |
4.5 / 5 (22) |
41
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Researchers find classical musical compositions adhere to power law
(PhysOrg.com) -- A team of researchers, led by Daniel Levitin of McGill University, has found after analyzing over two thousand pieces of classical music that span four hundred years of history, that virtually ...
Feb 21, 2012 |
4.3 / 5 (22) |
31
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New kind of high-temperature photonic crystal could someday power everything from smartphones to spacecraft
A team of MIT researchers has developed a way of making a high-temperature version of a kind of materials called photonic crystals, using metals such as tungsten or tantalum. The new materials — which ...
Feb 03, 2012 |
4.9 / 5 (18) |
5
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Rock analysis suggests France cave art is 'oldest'
Experts have long debated whether the sophisticated animal drawings in a famous French cave are indeed the oldest of their kind in the world, and a study out Monday suggests that yes, they are.
Other Sciences / Archaeology & Fossils
May 07, 2012 |
4.8 / 5 (17) |
3
Conservatism saved Iceland from catastrophe
The people of medieval Iceland survived disaster by sticking with traditional practices, an innovative new study suggests.
Space & Earth / Earth Sciences
Mar 22, 2012 |
4.4 / 5 (17) |
16
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Study: Arctic sea ice decline may be driving snowy winters seen in recent years
A new study led by the Georgia Institute of Technology provides further evidence of a relationship between melting ice in the Arctic regions and widespread cold outbreaks in the Northern Hemisphere. The study's ...
Space & Earth / Earth Sciences
Feb 27, 2012 |
4.1 / 5 (18) |
61
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Study: 800-year-old farmers could teach us how to protect the Amazon
In the face of mass deforestation of the Amazon, we could learn from its earliest inhabitants who managed their farmland sustainably. Research from an international team of archaeologists and paleoecologists, ...
Apr 09, 2012 |
5 / 5 (14) |
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Nearly one-tenth of hemisphere's mammals unlikely to outrun climate change: study
A safe haven could be out of reach for 9 percent of the Western Hemisphere's mammals, and as much as 40 percent in certain regions, because the animals just won't move swiftly enough to outpace climate change. ...
May 14, 2012 |
3.4 / 5 (16) |
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Proceedings of the National Academy of Sciences
The Proceedings of the National Academy of Sciences of the United States of America, usually referred to as PNAS, is the official journal of the United States National Academy of Sciences. PNAS is an important scientific journal that printed its first issue in 1915 and continues to publish highly cited research reports, commentaries, reviews, perspectives, feature articles, profiles, letters to the editor, and actions of the Academy. Coverage in PNAS broadly spans the biological, physical, and social sciences. Although most of the papers published in the journal are in the biomedical sciences, PNAS recruits papers and publishes special features in the physical and social sciences and in mathematics. PNAS (abbreviated Proc Natl Acad Sci USA for referencing and indexing purposes) is published weekly in print, and daily online in PNAS Early Edition CODEN: PNASC8.
For more information about Proceedings of the National Academy of Sciences, read the full article at
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