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 Koobi Fora Formation preserves a rich Plio-Pleistocene record of hominins, fauna, and environments, providing a cornerstone for understanding human evolution. Nearly all zooarchaeological evidence ...

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 ...

Did it all begin with hydrogen cyanide?

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 ...

Our method can be regarded as a variant of the method of fundamental solutions (MFS), in which solutions are also approximated via finite sums (6). The MFS differs from our approach in that each term ...

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 ...

On the Rate of Growth of the Population of the United States since 1790 and Its Mathematical Representation1 ...

Contributed by James Tiedje; received April 23, 2025; accepted January 26, 2026; reviewed by Gwyn A. Beattie and Corné M. Pieterse Soilborne diseases pose a significant threat to plant health, often ...

Agriculture was the critical intermediary through which climate change influenced the trajectory of ancient civilizations, yet the mechanisms linking environmental shifts and early farming practices ...

Instability and collapse of the underwater slippery air mattress hinder its applications, after which the air mattress cannot be recovered even on superhydrophobic surfaces like lotus leaves. Beyond ...