Proceedings of the National Academy of Sciences (PNAS)

Table Of Contents Page, PNAS Volume 123, Number 22

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Did it all begin with hydrogen cyanide?

Did it all begin with hydrogen cyanide? A. M. Nauth et al., Synthesis of α-aminonitriles using aliphatic nitriles, α-amino acids, and hexacyanoferrate as universally applicable non-toxic cyanide ...
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Combining process-based models with machine learning ensemble improves soil nitrous oxide estimates

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In This Issue

Foraging honey bees (Apis mellifera) returning to the hive can perform waggle dances to communicate the direction and distance of a food source to nestmates. The waggle dance is considered a one-way ...
PNAS

Anion-mediated solvation structures and intercalation chemistry of aqueous zinc-ion electrolytes

Aqueous zinc-ion batteries (ZIBs) are promising next-generation energy-storage systems owing to their intrinsic safety, low cost, resource abundance, and high-power density. In aqueous ZIBs, ...
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Haplodiploidy and the evolution of eusociality: A long-standing question is finally resolved

Women, more than men, tend to say they prefer romantic partners with traits linked to access to resources. For 36 y, social scientists have debated whether this sex difference results from gender ...
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Ocean warming enhances iron use efficiencies of marine ammonia-oxidizing archaea

Edited by Paul Falkowski, Rutgers The State University of New Jersey, New Brunswick, NJ; received October 29, 2025; accepted January 31, 2026 ...
PNAS

Cell fate acquisition at a de novo developmental boundary in the maize leaf

Developmental boundaries are conserved features of plant and animal morphogenesis, comprising cellular borders separating two tissue-types that eventually acquire distinct cell fates. In grass leaves, ...
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Social mobilizations for sustainability transformations

Social mobilizations for sustainability transformations Join the global community of subscribers to PNAS, the flagship journal of the US National Academy of Sciences, a mission-driven nonprofit ...
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More than a blueprint: Developmental regulators secure the cellular environment for regeneration

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Marine heatwave decimates fire coral populations in the Caribbean

Marine heatwaves (MHW) are common destructive events affecting coral reefs. After decades of degradation, the shallow reefs of the United States Virgin Islands have been depleted of scleractinian ...
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Growing recognition of post-acute infection syndromes

Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) and long COVID affect large numbers of people, and constitute a substantial burden to the U.S. and global economies. The article by Eckey et ...