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.
Biologists find mistletoe species lacks genes found in all other complex organisms
Indiana University scientists have discovered the first known instance of a plant or animal lacking several key genes involved in energy production in cells.
Genetic study of 'co-evolution' could provide clues to better food production
In 1964, renowned biologists Peter Raven and Paul Erhlich published a landmark study that introduced the concept of co-evolution. Using butterflies and plants as primary examples, the team determined that two species can ...
Physicists shatter stubborn mystery of how glass forms
A physicist at the University of Waterloo is among a team of scientists who have described how glasses form at the molecular level and provided a possible solution to a problem that has stumped scientists for decades.
Groundwater from aquifers important factor in food security
Thirsty cities, fields and livestock drink deeply from aquifers, natural sources of groundwater. But a study of three of the most-tapped aquifers in the United States shows that overdrawing from these resources could lead ...
Massive southern invasions by northern birds linked to climate shifts
With puzzling variability, vast numbers of birds from Canada's boreal forests migrate hundreds or thousands of miles south from their usual winter range. These so-called irruptions were first noticed by birdwatchers decades ...
Ice cores store atmospheric bubbles from a million years ago
Atmospheric mysteries unraveling: New findings may be key to explaining mercury, much more
It's been difficult to explain patterns of toxic mercury in some parts of the world, such as why there's so much of the toxin deposited into ecosystems from the air in the southeastern United States, even upwind of usual ...
Bone analysis reveals violent history of pre-Hispanic Mesoamerica
3-D scans of mating fruit flies uncovers female biology
Following in the footsteps of Leonardo Da Vinci's 1493 anatomical sketch of a man and woman, "The Copulation," Cornell researchers used cutting-edge X-ray technology to noninvasively image fruit flies during and after mating.
New report finds Conservatives demonstrate more self control than Liberals
Findings from three separate studies link a person's political ideology and their self-control performance, with conservatives demonstrating greater self-control than liberals. The research led by Joshua John Clarkson, a ...