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 (NAS). 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 is published weekly in print, and daily online in PNAS Early Edition. PNAS was established by NAS in 1914, with its first issue published in 1915. The NAS itself had been founded in 1863 as a private institution, but chartered by the US Congress, with the goal to "investigate, examine, experiment, and report upon any subject of science or art." By 1914, the Academy was well established.
Graphene sheets enable ultrasound transmitters
University of California, Berkeley, physicists have used graphene to build lightweight ultrasonic loudspeakers and microphones, enabling people to mimic bats or dolphins' ability to use sound to communicate and gauge the ...
Substrates change nanoparticle reactivity
Is salt the key to unlocking the interiors of Neptune and Uranus?
The interiors of several of our Solar System's planets and moons are icy, and ice has been found on distant extrasolar planets, as well. But these bodies aren't filled with the regular kind of water ice that you avoid on ...
Insight into how pharmaceutical solvents diffuse through a human nail
Computer simulation shows climate mitigation schemes could result in increased water stress
Feed supplement greatly reduces dairy cow methane emissions
A supplement added to the feed of high-producing dairy cows reduced methane emissions by 30 percent and could have ramifications for global climate change, according to an international team of researchers.
Researchers narrow birth estimate for the Takliman Desert
Great Plains agricultural greenhouse gas emissions could be eliminated
Researchers from the Natural Resource Ecology Lab at Colorado State University and their partners have completed a historical analysis of greenhouse gas emissions from the U.S. Great Plains that demonstrates the potential ...
How the brain combines information across sensory modalities
Septic tanks aren't keeping poo out of rivers and lakes
The notion that septic tanks prevent fecal bacteria from seeping into rivers and lakes simply doesn't hold water, says a new Michigan State University study.