Proceedings of the National Academy of Sciences (PNAS)

Learn from the blame game when AI causes harm

This case illustrates a recurring dilemma in AI governance. As large language models (LLMs) and autonomous decision-making ...
PNAS

Danger at the border: Rac turns nibblers into murderers

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PNAS

Regional vegetation die-off in response to global-change-type drought

Future drought is projected to occur under warmer temperature conditions as climate change progresses, referred to here as global-change-type drought, yet quantitative assessments of the triggers and ...
PNAS

Noise in solid-state nanopores

We study ionic current fluctuations in solid-state nanopores over a wide frequency range and present a complete description of the noise characteristics. At low frequencies (f ≲ 100 Hz) we observe ...
PNAS

Retraction for Liaki et al., A targeted combination therapy achieves effective pancreatic cancer regression and prevents tumor resistance

The editors are retracting this article due to an undisclosed relevant competing interest at the time of submission. NAS Member Contributing author, Mariano Barbacid, and two coauthors, Vasiliki Liaki ...
PNAS

Disentangling the contribution of biological and physical properties of leaves and canopies in imaging spectroscopy data

Finally, Knyazikhin et al. (1) argue that links between leaf biochemistry (e.g., %N) and “hyperspectral” reflectance data are obscured by variation in leaf-surface albedo, which seems inconsistent ...
PNAS

Editorial and Journal Policies

The PNAS Editorial Board is made up of NAS members who are active scientists and experts in their fields. On submission, your paper is assigned to an Editorial Board member in one of the 31 NAS ...
PNAS

MANY-ELECTRON THEORY OF ATOMS AND MOLECULES

MANY-ELECTRON THEORY OF ATOMS AND MOLECULES Note: The article usage is presented with a three- to four-day delay and will update daily once available. Due to ths delay, usage data will not appear ...
PNAS

Comparison of the Statically and Seismologically Determined Elastic Constants of Rocks

Comparison of the Statically and Seismologically Determined Elastic Constants of Rocks* ...
PNAS

Warming-induced tipping points of Arctic and alpine shrub recruitment

Shrub recruitment, a key component of vegetation dynamics beyond forests, is a highly sensitive indicator of climate and environmental change. Warming-induced tipping points in Arctic and alpine ...
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 ...
PNAS

Stabilized detonation for hypersonic propulsion

There is now an intensifying international effort to develop robust propulsion systems for hypersonic and supersonic flight. Such a system would allow flight through our atmosphere at very high speeds ...