PNAS is one of the world"s most-cited multidisciplinary scientific serials. Since its establishment in 1914, it continues to publish cutting-edge [...]

PNAS is one of the world"s most-cited multidisciplinary scientific serials. Since its establishment in 1914, 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 weekly in print, and daily online in PNAS Early Edition. The PNAS impact factor is 9.38 and the Eigenfactor is 1.7 for 2008. PNAS is available by subscription. (source)