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People are more likely to donate to charity after reading ads emphasizing society’s dependence on donors to help the needy than after reading ads with other framing, such as inequity or the warm glow of giving, based on a survey in Japan. In PNAS Nexus: https://ow.ly/Jcbc50ZtXcG

Tropical forests can recover rapidly after disturbance, but certain old-growth specialist trees will be missing. A study in Costa Rica shows that low abundance and low seed production hold back these trees, suggesting targeted plantings could help. In PNAS: https://ow.ly/Shla50ZtWMN

One of the most-viewed PNAS Nexus articles in the last week is “From Sputnik to Starship: Estimating the experience curve of space launch technology.” Explore the article here: https://ow.ly/cAgw50ZtX7Y To learn more about submitting your own research, visit PNAS Nexus at https://ow.ly/Jhnm50ZtX7X.

Discover one of the top-performing PNAS Nexus articles on Altmetric from the past 3 months! 🐘 Functional anisotropy of the elephant trunk skin by Preti et al. earned a score of 69, fueled by strong media attention. Read more: https://ow.ly/IE7Z50ZtVUe

What happens when parasites pull the strings? 🦗🪱 Wormlike nematomorphs drive crickets into streams, where the insects become an omega-3-rich food source for endangered fish. New research reveals how parasites may influence nutrient flow. In PNAS Nexus: https://ow.ly/ipCO50ZtX4G

One of the most-discussed PNAS articles on Reddit last month was “Uncovering thousands of endosymbiont DNA transfer events within single cockroach genomes.” Explore the article: https://ow.ly/zn4C50ZtW73

A study links severe flooding in rural Appalachia to county-level opioid overdose mortality. The increase persisted for a decade after floods and may be caused by trauma, instability, and reduced access to treatment and harm reduction services. In PNAS: https://ow.ly/KzT750ZtWER

Where did bread wheat originate? In the latest PNAS Science Sessions episode, researchers discuss evidence from an 8,000-year-old site in Georgia that suggests another center of bread wheat domestication, expanding our understanding of early agriculture. Listen now: https://ow.ly/Rbzb50ZtV7E

High temperatures and low precipitation in the American West last winter led to record-low snowpack. A study finds that such a snow drought is 4.4 times more likely in the current climate than it would have been in the pre-industrial climate. In PNAS: https://ow.ly/LKKh50ZtquX

An automated device coaches people with no laboratory experience through sample pooling for pathogen tests. The device checks work in real time and gives feedback when errors are made, helping to expand testing in resource-limited settings. In PNAS Nexus: https://ow.ly/JFRE50ZtxG5

One of the most-viewed PNAS articles in the last week is “Environmental phylogenetics supports a steady diversification of crown eukaryotes starting from the mid-Proterozoic.” Explore the article here: https://ow.ly/5Lpf50Ztxar For more trending articles, visit https://ow.ly/AMo550Ztxas.

Human-elephant conflict is projected to rise across Southern Africa as human populations grow, cropland expands, and climate-driven aridity increases. New hotspot maps could help guide land-use planning and mitigation efforts. In PNAS Nexus: https://ow.ly/rjNt50ZtxAk

Mixed plastic waste to hydrogen. Researchers developed a low-temperature process that converts mixed plastics into high-purity hydrogen with minimal carbon emissions—no extensive sorting needed. In Science X / Phys.org: https://ow.ly/iXe550ZtwoO In PNAS: https://ow.ly/3B2M50Ztwkn

A new analysis of more than 4,400 rocket launches suggests that space launch technology follows a steep learning curve, with the cost of reaching orbit continuing to decline over time. In PNAS Nexus: https://ow.ly/LPNx50ZtxsP In China Xinhua News: https://ow.ly/zyTP50ZtxsM

Like humans, monkeys likely use symbolic features to encode geometric shapes, such as symmetry, parallelism, and right angles. Geometric intuition may be the latest trait that turns out not to be unique to humans after all. In PNAS: https://ow.ly/rAwU50Zto10

Read highlights in this week’s issue of PNAS: We explore Late Pleistocene cultural continuity in the Levant, analyze how machine learning tracks neuronal patterns, and investigate gaps in early eukaryotic evolution. Explore now: https://ow.ly/y8vw50ZtrUl

To explore how birds evolved flightlessness, researchers hybridized flightless domestic Indian Runner Ducks with flying Mallards. Increases in body and leg size, especially early in development, drive flightlessness rather than wing reductions. In PNAS: https://ow.ly/C8Ql50ZtnOC

In this week’s PNAS Nexus Advance Articles: Research on finite-stage nonreciprocal thermal circulators for radiative energy harvesting, how encoding anticipated interactions enhances human memory for dynamic stimuli, and more. Explore now: https://ow.ly/sO6s50Zsraw

The cost of launching a kilogram of cargo into orbit fell from $87,023 in 1960 to $3,868 in 2025. For each doubling of cumulative payload, the average cost to launch a kg has decreased by 21.2%, positioning it to reach $300 per kg by 2040. In PNAS Nexus: https://ow.ly/yE4y50ZsqX0

Explore cutting-edge #AI & #MachineLearning with PNAS Nexus! Discover interdisciplinary studies shaping #science, #engineering and #society. Read more: https://ow.ly/X3P350Zsr6C Interested in submitting your research? Visit PNAS Nexus at https://ow.ly/QgNm50Zsr6n