Minimax Theorems* Note: The article usage is presented with a three- to four-day delay and will update daily once available. Due to ths delay, usage data will not appear immediately following ...

The world is in a battle for truth. A cadre of researchers is eagerly seeking ways to stymie the spread of mis- and disinformation. The stakes are high. Social media have become an accelerant for the ...

Various self-service options are available to institutional administrators at subscribing institutions. Select a topic below for step-by-step instructions and video guides. New administrators must ...

Effect of Inhomogeneity on Cosmological Models ...

PNAS publishes peer-reviewed research in psychological and cognitive sciences, including studies on decision-making, language processing, emotional regulation, cognitive development, and more. These ...

Hamiltonian Systems and Transformation in Hilbert Space Note: The article usage is presented with a three- to four-day delay and will update daily once available. Due to ths delay, usage data will not ...

FOSSILS, EARLY LIFE, AND ATMOSPHERIC HISTORY Note: The article usage is presented with a three- to four-day delay and will update daily once available. Due to ths delay, usage data will not appear ...

The Origin of Maize Note: The article usage is presented with a three- to four-day delay and will update daily once available. Due to ths delay, usage data will not appear immediately following ...

Journal Club posts are short news stories featuring a recent important, timely journal article selected by one of our Journal Club panelists, who are post-doctoral associates and graduate students in ...

Note: The article usage is presented with a three- to four-day delay and will update daily once available. Due to ths delay, usage data will not appear immediately following publication. Citation ...

Edited by John M. Wallace, University of Washington, Seattle, WA, and approved December 12, 2012 (received for review August 22, 2012) Summer monsoons and tropical storms (TSs) affect billions of ...

Formation of knots in mathematical self-avoiding random walks has been extensively studied (10 – 16). In the 1960s, Frisch and Wasserman (10) and Delbruck (11) conjectured that the probability of ...