Proceedings of the National Academy of Sciences (PNAS)

Table Of Contents Page, PNAS Volume 123, Number 6

The Middle Pleistocene (MP; ca. 774 to 129 ka) marks a critical period of human evolution, characterized by increasing ...
PNAS

The diversity and biogeography of soil bacterial communities

Scientific understanding of microbial biogeography is particularly weak for soil bacteria, even though the diversity and composition of soil bacterial communities is thought to have a direct influence ...
PNAS

Generalized scaling of spin qubit coherence in over 12,000 host materials

Contributed by D. D. Awschalom; received December 1, 2021; accepted March 3, 2022; reviewed by Renbao Liu and Chris Van de Walle ...
PNAS

Rate enhancement of bacterial extracellular electron transport involves bound flavin semiquinones

Abstract 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 ...