News tagged with proceedings of the national academy of sciences
Groundwater depletion in semiarid regions of Texas and California threatens US food security
The nation's food supply may be vulnerable to rapid groundwater depletion from irrigated agriculture, according to a new study by researchers at The University of Texas at Austin and elsewhere.
May 28, 2012 |
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Radioactive bluefin tuna crossed the Pacific to US
Across the vast Pacific, the mighty bluefin tuna carried radioactive contamination that leaked from Japan's crippled nuclear plant to the shores of the United States 6,000 miles away - the first time a huge ...
May 28, 2012 |
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A 'B12 shot' for marine algae? Scientists find key protein for algae growth in the ocean
Scientists have revealed a key cog in the biochemical machinery that allows marine algae at the base of the oceanic food chain to thrive. They have discovered a previously unknown protein in algae that grabs an essential ...
May 31, 2012 |
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Killer fungus spreads to endangered gray bats: US
A deadly fungus that has wiped out large populations of bats in North America has spread to a new species, the endangered gray bat, US wildlife officials said Tuesday.
May 29, 2012 |
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Nowhere to hide: New device sees bacteria behind the eardrum
Doctors can now get a peek behind the eardrum to better diagnose and treat chronic ear infections, thanks to a new medical imaging device invented by University of Illinois researchers. The device could usher ...
May 29, 2012 |
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50-year cholera mystery solved: Answers may help clear the way for a new class of antibiotics
For 50 years scientists have been unsure how the bacteria that gives humans cholera manages to resist one of our basic innate immune responses. That mystery has now been solved, thanks to research from biologists at The University ...
May 29, 2012 |
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Study finds modern dog breeds genetically disconnected from ancient ancestors
Cross-breeding of dogs over thousands of years has made it extremely difficult to trace the ancient genetic roots of today's pets, according to a new study led by Durham University.
May 21, 2012 |
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Today's environment influences behavior generations later: research
Researchers at The University of Texas at Austin and Washington State University have seen an increased reaction to stress in animals whose ancestors were exposed to an environmental compound generations earlier. The findings, ...
May 21, 2012 |
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Copy of the genetic makeup travels in a protein suitcase
Scientists from the Institute for Physical and Theoretical Chemistry at the University of Bonn have succeeded for the first time in the real time filming of the transport of an important information carrier in biological ...
May 25, 2012 |
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Squid ink from Jurassic period identical to modern squid ink, study shows
(Phys.org) -- An international team of researchers, including a University of Virginia professor, has found that two ink sacs from 160-million-year-old giant squid fossils discovered two years ago in England ...
Other Sciences / Archaeology & Fossils
May 21, 2012 |
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Nanofluidics sorts DNA for cancer research
(Phys.org) -- Cornell nanotechnology researchers have devised a new tool to study epigenetic changes in DNA that can cause cancer and other diseases: a nanoscale fluidic device that sorts and collects DNA, ...
Nanotechnology / Bio & Medicine
May 24, 2012 |
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Ultrasensitive biosensor promising for medical diagnostics
(Phys.org) -- Researchers have created an ultrasensitive biosensor that could open up new opportunities for early detection of cancer and "personalized medicine" tailored to the specific biochemistry of individual ...
May 15, 2012 |
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Mechanical properties of stem cells can foretell what they will become
To become better healers, tissue engineering need a timely and reliable way to obtain enough raw materials: cells that either already are or can become the tissue they need to build. In a new study, Brown ...
May 21, 2012 |
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Richer parasite diversity leads to healthier frogs: study
Increases in the diversity of parasites that attack amphibians cause a decrease in the infection success rate of virulent parasites, including one that causes malformed limbs and premature death, says a new University of ...
May 21, 2012 |
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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 |
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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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