期刊介绍：

PNAS is one of the world's most-cited multidisciplinary scientific serials. Since its establishment in 1915, it continues to publish cutting-edge research reports, commentaries, reviews, perspectives, colloquium papers, and actions of the Academy. Coverage in PNAS spans the biological, physical, and social sciences. PNAS is published biweekly in print, and weekly online in PNAS Early Edition.