Proceedings of the National Academy of Sciences (PNAS)

Table Of Contents Page, PNAS Volume 122, Number 43

This research investigates the projected risks of future climate trends on tropical cyclone–induced power outages in the ...
PNAS

Superconductive sodalite-like clathrate calcium hydride at high pressures

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

Scalable high-voltage Zn||MnO2 batteries achieved by mild amphiphilic hydrogel electrolytes

This work is supported by a grant from the Shenzhen Science and Technology Program (SGDX20211123151002003) and the Innovation and Technology Fund (GHP/191/21SZ). Z.P. thanks for financial support from ...
PNAS

miR444b.2–HsfA1–AOC1 module mediates heat priming–enhanced blast resistance in rice

Global warming alters the occurrence and spread of plant diseases by affecting the plant–pathogen interactions. Here, we uncover a miR444b.2 –HsfA1– AOC1 regulatory module that integrates high ...
PNAS

Psychological and Cognitive Sciences

This is an addendum toComplex viscosity of helical and doubly helical polymeric liquids from general rigid bead-rod theory ...
PNAS

Front Matter

Dive into PNAS Front Matter for editorials, interviews, science news, and commentary that offer expert perspective on today’s most important research findings.
PNAS

GRAVITATION AND THE ELECTRON

Emotions coordinate our behavior and physiological states during survival-salient events and pleasurable interactions. Even though we are often consciously aware of our current emotional state, such ...
Proceedings of the National Academy of Sciences (PNAS)

Could dark energy be changing over time?

Einstein’s version of dark energy is known as the cosmological constant. It implies a fixed amount of dark energy in each ...
PNAS

Limits to adaptation along environmental gradients

Why do species’ ranges often end when no obvious change in the environment suggests they should? Our theory explains that there is an inherent limit to adaptation arising in any (finite) natural ...
PNAS

Rate enhancement of bacterial extracellular electron transport involves bound flavin semiquinones

Extracellular redox-active compounds, flavins and other quinones, have been hypothesized to play a major role in the delivery of electrons from cellular metabolic systems to extracellular insoluble ...
PNAS

Long-term natural variability and 20th century climate change

Global mean temperature at the Earth's surface responds both to externally imposed forcings, such as those arising from anthropogenic greenhouse gases, as well as to natural modes of variability ...
PNAS

Spontaneous knotting of an agitated string

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 ...