Proceedings of the National Academy of Sciences
Articles in this Issue
Signals and the shape of developmental landscapes
The aspiration for scalable citizen-level interventions and the missing tests of countermessaging
Protein synthesis blockade prevents fear memory reactivation via inhibition of engram synapse strengthening
Memory relies on ensembles of engram cells in the brain. While previous studies have established the existence of these cells, the relationship between cellular and synaptic activity remains unclear....
Less NO <sub>x</sub> emission reductions are a potential cause for low effectiveness of sulfate aerosol reductions in China
An ecological cascade links climatic variability to avian irruptions and zoonotic salmonellosis outbreaks
Salmonellosis is a common bacterial infection that can lead to severe illness and death in humans as well as domesticated and wild animals. In bird populations, salmonellosis outbreaks are temporally...
Berry Batesian mimicry enables bird dispersal of asexual bulbils in a yam
Many plants that abandon sex rely on clonal propagules, but their short dispersal distances can trap offspring near parent plants and enemies. We show that the yam Dioscorea melano...
Brain displacement and nonlinear deformation following human spaceflight
When humans return from space, their average brain position is higher within the cranial compartment. Here, we evaluated brain regional shift magnitudes and deformations and their behavioral correlate...
Seeing Roman life through water: Exploring Pompeii’s public baths via carbonate deposits
The ancient city of Pompeii, destroyed by the eruption of Mt. Vesuvius in AD 79, shows technological improvements to its water supply after becoming a Roman colony. Its inhabitants relied on wells for...
Reply to Malka and Druckman: Durability tests already account for countermessaging, and additional countermessaging is unlikely
When broken bones need air: Erythrocytes step in to heal
Reply to Song et al.: Acidity-sensitive chemistry promotes sulfate formation in East Asia
Isotopic evidence for volatile loss driven by South Pole-Aitken basin–forming impact
Recent studies suggest that the lunar farside experienced a magma ocean evolution similar to that of the nearside. Thus, the nearside-farside dichotomy, such as volcanism and crustal thickness, is lik...
Rewinding evolution in planta: A Rubisco-null platform validates high-performance ancestral enzymes
Improving the photosynthetic enzyme Rubisco is a key target for enhancing C 3 crop productivity, but progress has been hampered by the difficulty of evaluating...
Sudan’s complex genetic admixture history drives adaptation to malaria in Sudanese Copts
Sudan lies at the crossroads of Africa and the Middle East, with rich cultural, linguistic, and ecological diversity shaped by a complex demographic history. We present a whole-genome sequencing (WGS)...