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.
Researchers find polyploidy has occurred many times during the evolution of insects
University of Arizona biology researchers have made a discovery that helps resolve a conundrum that has puzzled scientists for more than a century.
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Policy driver of soil organic carbon accumulation in Chinese croplands identified
China's croplands have experienced drastic changes in management practices related to fertilization, tillage and residue treatment since the 1980s. The impact of these changes on soil organic carbon (SOC) has drawn major ...
Virtually modelling the human brain in a computer
Neurons that remain active even after the triggering stimulus has been silenced form the basis of short-term memory. The brain uses rhythmically active neurons to combine larger groups of neurons into functional units. Until ...
Homemade microscope reveals how a cancer-causing virus clings to our DNA
Using a homemade, high-tech microscope, scientists at the University of Virginia School of Medicine have revealed how a cancer-causing virus anchors itself to our DNA. That discovery could pave the way for doctors to cure ...
For nuclear weapons reduction, a way to verify without revealing
In past negotiations aimed at reducing the arsenals of the world's nuclear superpowers, chiefly the U.S. and Russia, a major sticking point has been the verification process: How do you prove that real bombs and nuclear devices—not ...
Engineering a plastic-eating enzyme
Scientists have engineered an enzyme which can digest some of our most commonly polluting plastics, providing a potential solution to one of the world's biggest environmental problems.
Warming climate could speed forest regrowth in eastern U.S.
Climate change could speed the natural regrowth of forests on undeveloped or abandoned land in the eastern U.S., according to a new study.
Five-year study reveals how much carbon China's environmental resources capture
A large team of researchers has conducted a five-year research program in China aimed at measuring the amount of carbon sequestered by environmental resources in that country. In their paper published in Proceedings of the ...
Global warming is mixing up nature's dinner time, study says
Global warming is screwing up nature's intricately timed dinner hour, often making hungry critters and those on the menu show up at much different times, a new study shows.
New insight into the never-ending arms-race between viruses and their hosts
Viruses have been infecting all forms of life – from single-celled bacteria to humans – for as long as there has been life on Earth. Because of this, ancient mechanisms of virus resistance co-exist in our bodies alongside ...
