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 ...

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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 ...

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 ...

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 ...

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 ...

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 Ashley Steed, Washington University in St. Louis School of Medicine, St. Louis, MO; received July 20, 2025; accepted January 28, 2026 by Editorial Board Member Michael S. Diamond ...

Edited by Michael L. Klein, Temple University, Philadelphia, PA, and approved February 17, 2012 (received for review November 5, 2011) ...

As the last great ice sheets were retreating and the Pleistocene Epoch was ending, humanity began an epic journey. For hundreds of thousands of years, our ancestors had survived by hunting animals and ...

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 ...

More than half (52%) of the spatial and temporal variance in multidecadal drought frequency over the conterminous United States is attributable to the Pacific Decadal Oscillation (PDO) and the ...