View the Table of Contents for Volume 123, Issue 22 ...

Nitrogen cycling regulates ecosystem productivity and carbon storage, yet its global responses, mechanisms, and future trajectories under climate warming remain poorly understood. By integrating 7,941 ...

It’s increasingly hard to find peer reviewers. To address the problem, we propose a universal peer-review system based on the exchange of credits. Image credit: Dave Cutler (artist). Several factors ...

The ordered arrangement of mechanosensory hair cells in vertebrate auditory epithelia relies on mechanical interactions among multiple cell types. Yet, how local mechanical heterogeneity produces ...

In the PNAS of March 4, 2026, Lynne Peeples presented a news feature on the “science behind acupuncture” (1). We find this article unbalanced. It lacks a critical analysis of what acupuncture is and ...

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 ...

The complete amino acid sequence of a human γG1 immunoglobulin (Eu) has been determined and the arrangement of all of the disulfide bonds has been established. Comparison of the sequence with that of ...

Linguistic structures show uneven global distributions, but it remains unknown to what extent such distributions are driven ...

Plastic waste causes harm to marine life and has become a major global environmental concern. The recent COVID-19 pandemic has led to an increased demand for single-use plastic, intensifying pressure ...

Edited by M. Granger Morgan, Carnegie Mellon University, Pittsburgh, PA, and approved February 15, 2012 (received for review September 19, 2011) Here, we clarify the potential of CCS to mitigate ...

Edited by Michael S. Gazzaniga, University of California, Santa Barbara, CA, and approved October 22, 2013 (received for review August 6, 2013) In science, it is usually assumed that, the better one ...

Because ecosystem responses to such variables may depend on the type of ecosystem, its species composition and soils, abiotic variables including climate, and the magnitude of the change in drivers, ...