Proceedings of the National Academy of Sciences (PNAS)

Energy costs of Hannibal’s alpine crossing

Hannibal crossed the Alps with a large army containing 37 war elephants in 218 BC. Details of his route have scholars ...
PNAS

No evidence of continuously advanced green-up dates in the Tibetan Plateau over the last decade

Satellite-derived greenness vegetation indices provide a valuable way to retrieve spatially continuous information about phenological change and have been thus widely used to assess the influences of ...
PNAS

Attenuation of sinking particulate organic carbon flux through the mesopelagic ocean

Edited by David M. Karl, University of Hawaii, Honolulu, HI, and approved December 9, 2014 (received for review August 8, 2014) ...
PNAS

Journal Club

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 ...
PNAS

VALUATION EQUILIBRIUM AND PARETO OPTIMUM

Based on Cowles Commission Discussion Paper, Economics, No. 2067 (January, 1953). This article has been prepared under contract Nonr-358(01), NR 047-006 between the Office of Naval Research and the ...
PNAS

On the Riemann Hypothesis in Function-Fields

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PNAS

Acoustical Impedance and the Theory of Horns and of the Phonograph

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PNAS

EPIGENETIC CONTROL SYSTEMS

Aided by grants from the National Science Foundation. This essay is based on remarks given at a conference on “Extrachromosomal Heredity” held at Gif-sur-Yvette, France, in March, 1958. The conference ...
PNAS

The Structure of Atoms and the Octet Theory of Valence

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PNAS

The Isolation and Culture of Gymnosporangium Juniperi-Virgininae Schw. Upon Artificial Media

Research Fellow, Div. of Plant Pathology and Botany, Univ. of Minnesota, St. Paul, Minn. This research was supported in part by a grant from the Rockefeller Foundation to the Dept. of Plant Science, ...
PNAS

Mechanism of action of streptomycin in E. coli: interruption of the ribosome cycle at the initiation of protein synthesis.

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PNAS

Reconfigurable hydrogel interfaces for soft brain electrodes

Reconfigurable hydrogel interfaces for soft brain electrodes The President’s Council of Advisors on Science and Technology has called for a 33% increase in the number of science, technology, ...