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Proceedings of the National Academy of Sciences

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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.

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News tagged with proceedings of the national academy of sciences

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Study: Believers' inferences about God's beliefs are uniquely egocentric

Study: Believers' inferences about God's beliefs are uniquely egocentric

Medicine & Health / Psychology & Psychiatry

created Nov 30, 2009 | popularity 4 / 5 (49) | comments 182

Religious people tend to use their own beliefs as a guide in thinking about what God believes, but are less constrained when reasoning about other people's beliefs, according to new study published in the ...


At Stanford, nanotubes + ink + paper = equal instant battery (w/ Video)

At Stanford, nanotubes + ink + paper = equal instant battery (w/ Video)

Nanotechnology / Nanomaterials

created Dec 07, 2009 | popularity 4.9 / 5 (27) | comments 3

(PhysOrg.com) -- Stanford scientists are harnessing nanotechnology to quickly produce ultra-lightweight, bendable batteries and supercapacitors in the form of everyday paper.


Bacteria offer insights into human decision making

Bacteria offer insights into human decision making

Physics / General Physics

created Dec 08, 2009 | popularity 4.6 / 5 (20) | comments 1

(PhysOrg.com) -- Scientists studying how bacteria under stress collectively weigh and initiate different survival strategies say they have gained new insights into how humans make strategic decisions that ...


Experts: Man controlled robotic hand with thoughts (AP)

Scientists: Man controlled robotic hand with thoughts

Medicine & Health / Research

created Dec 02, 2009 | popularity 5 / 5 (16) | comments 2

(AP) -- A group of European scientists said Wednesday they have successfully connected a robotic hand to an amputee, allowing him to feel sensations in the artificial limb and control it with his thoughts.


Physicists propose quantum entanglement for motion of microscopic objects

Physics / Quantum Physics

created Dec 21, 2009 | popularity 4.3 / 5 (18) | comments 13

Researchers at the California Institute of Technology (Caltech) have proposed a new paradigm that should allow scientists to observe quantum behavior in small mechanical systems.


Absence of evidence for a meteorite impact event 13,000 years ago

Absence of evidence for a meteorite impact event 13,000 years ago

Space & Earth / Earth Sciences

created Dec 08, 2009 | popularity 4.1 / 5 (17) | comments 13

An international team of scientists led by researchers at the University of Hawaii at Manoa have found no evidence supporting an extraterrestrial impact event at the onset of the Younger Dryas ~13000 years ...


Poisonous prehistoric 'raptor' discovered

Poisonous prehistoric 'raptor' discovered in China

Other Sciences / Archaeology & Fossils

created Dec 21, 2009 | popularity 4.9 / 5 (12) | comments 1

(PhysOrg.com) -- A group of University of Kansas researchers working with Chinese colleagues have discovered a venomous, birdlike raptor that thrived some 128 million years ago in China. This is the first ...


baby walking

Why newborn babies can't walk

Medicine & Health / Neuroscience

created Dec 18, 2009 | popularity 4.2 / 5 (13) | comments 16 weblog

(PhysOrg.com) -- The first steps of an infant is a real milestone in the development of all mammals including humans, but little is known about why some animals can walk soon after birth, while others need ...


Research backs theory on autism, schizophrenia

Medicine & Health / Research

created Nov 30, 2009 | popularity 3.9 / 5 (11) | comments 3

(PhysOrg.com) -- New research by Simon Fraser University evolutionary biologist Bernard Crespi reinforces his theory that autism and schizophrenia are diametric or opposite conditions based on genes.


Researchers Identify Key Molecules in Photosynthesis

Researchers Identify Key Molecules in Photosynthesis

Chemistry / Biochemistry

created Dec 02, 2009 | popularity 5 / 5 (8) | comments 0

(PhysOrg.com) -- Chemistry professor Harry Frank led an international group of researchers that identified the molecules in algae which direct the organisms to convert sunlight into oxygen. The findings may ...


Facebook (and systems biologists) take note: Network analysis reveals true connections

Facebook (and Systems Biologists) Take Note: Network Analysis Reveals True Connections

Technology / Computer Sciences

created Dec 07, 2009 | popularity 4 / 5 (9) | comments 8

(PhysOrg.com) -- Facebook figures out that you know Holly, although you haven't seen her in 10 years, because you have four mutual friends -- a good predictor of direct friendship. But sometimes Facebook gets ...


New Bacterial Behavior Discovered

New Bacterial Behavior Discovered

Biology / Cell & Microbiology

created Dec 15, 2009 | popularity 4.4 / 5 (7) | comments 1

(PhysOrg.com) -- Bacteria dance the electric slide, officially named electrokinesis by the USC geobiologists who discovered the phenomenon.


Scientists reveal malaria parasites' tactics for outwitting our immune systems

Scientists reveal malaria parasites' tactics for outwitting our immune systems

Medicine & Health / Research

created Nov 30, 2009 | popularity 4.8 / 5 (6) | comments 1

Malaria parasites are able to disguise themselves to avoid the host's immune system, according to research funded by the Wellcome Trust and published today in the journal Proceedings of the National Academy of ...


New platinum compound shows promise in tumor cells

New platinum compound shows promise in tumor cells

Chemistry / Biochemistry

created Dec 07, 2009 | popularity 4.8 / 5 (6) | comments 1

(PhysOrg.com) -- MIT chemists have developed a new platinum compound that is as powerful as the commonly used anticancer drug cisplatin but better able to destroy tumor cells.


Chemical energy influences tiny vibrations of red blood cell membranes

Chemical energy influences tiny vibrations of red blood cell membranes

Chemistry / Biochemistry

created Dec 21, 2009 | popularity 4.8 / 5 (6) | comments 0

(PhysOrg.com) -- Much like a tightly wound drum, red blood cells are in perpetual vibration. Those vibrations help the cells maintain their characteristic flattened oval or disc shape, which is critical to ...