2025 Issue 7 of PNAS Nexus is now available! Explore insights on topics including morula complementation restoring male germline in NANOS2 null sheep, neural predictors of risky choice, economical representation of spatial networks, and more. Read now:

A study of Japanese mothers finds an association between butyrate-producing bacteria in the gut and depressive mood. A diet high in soy products, fermented food, seaweed, mushrooms, and vegetables is beneficial for gut health and mood. In PNAS Nexus:

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Examine the threat of climate change with PNAS Nexus. Explore illuminating articles that delve into the challenges our planet and society face: . Interested in contributing your research on this topic? Learn more:

2025 Issue 8 of PNAS Nexus is now available! Explore insights on topics like RNA-interactome capture and herpesviral gene expression, the joint evolution of migration patterns, strategies for teaching political discernment, and more. In PNAS Nexus:

One of the most-viewed PNAS Nexus articles in the last week is “Underestimation of systolic pressure in cuff-based blood pressure measurement.” Explore the article here: To submit your own research, visit PNAS Nexus at

A study using data from the birding platform eBird shows that the amount of time a bird spends in the breeding range, versus the nonbreeding range on the other end of their migration, predicts the distance between these seasonal locations. In PNAS Nexus:

A new study shows cultural psychology goes beyond individualism vs. collectivism. Data from ~100 countries reveal broader values shape cultural differences in behavior & psychology. In @physorg_com: .In PNAS Nexus:

As the climate warms, extreme heat puts newborns in rural Sub-Saharan Africa at risk. An extra 50 days of extreme heat during pregnancy is associated with up to 4 additional neonatal deaths per 1,000 births. In PNAS Nexus:

As signatories of the UN SDG Publishers Compact, @PNASNews and PNAS Nexus champion research that advances all 17 Sustainable Development Goals. Discover how science is driving global progress:

A neural network trained on the archives of the World Values Survey can predict the nationality of a person from their survey answers with nearly 90% accuracy. The study identifies the 60 most predictive answers. In PNAS:

People who fail to predict the outcome of several coin tosses in a row have more pessimistic expectations for the success of their next guesses—despite knowing that the chances of success are always 50%. In PNAS Nexus:

Although men and boys are more directly and indirectly aggressive than women and girls in most contexts, a study of 24 countries finds one specific context in which this pattern is reversed: the sibling relationship. In PNAS Nexus:

In this week’s Advanced Articles, we explore versatile phenolic composites by in-situ polymerization of concentrated carbon nanotube dispersions, a graph theory-based algorithm for reducing atmospheric chemical mechanisms, and more. Explore now:

One of the most-viewed PNAS Nexus articles in the last week is “Climate action literacy interventions increase commitments to more effective mitigation behaviors.” Read now: To submit your own research, visit PNAS Nexus at

A survey of all known extinctions in Macaronesia (the Azores, Madeira, Selvagens, the Canaries, and Cabo Verde) finds that half of the islands’ birds have been lost. Many birds, including the Madeiran owl, were lost after humans arrived. In PNAS Nexus:

A new study finds that when people lose time on experiences that bring joy, they often delay returning—even when they want to and have good options. This hesitation adds emotional and time costs. In @WashingtonPost: In PNAS Nexus:

An internet-connected sensor worn inside a disposable face mask monitors patients’ breath for ammonia, the concentration of which can provide information on kidney function. This approach could be used for a wide range of breath sensors. In PNAS Nexus:

Working at the intersection of engineering, physics, or applied sciences? PNAS Nexus Associate Editor Derek Abbott shares how cross-disciplinary research is shaping the future—and why PNAS Nexus is uniquely positioned to support it. Read more:

Weaving is an ancient art that creates fabrics, sometimes with elaborate two-dimensional patterns. A study explores weaving in three dimensions, creating volumetric patterns that could be used in textiles and even tissue engineering. In PNAS Nexus:

A machine learning model trained on mosquito surveillance data from Connecticut produces maps of West Nile virus risk for states across the Northeast, including those states that do not perform mosquito surveillance themselves. In PNAS Nexus:

Time-series brain imaging, when combined with genetic information, can provide early warnings of cognitive decline that could progress to Alzheimer's disease, offering physicians earlier intervention opportunities. In PNAS Nexus: