In this issue: Solving the mystery of Pollock’s blue pigment, uncovering early evidence of adzuki bean domestication, and tracing the origins of Châtelperronian culture in western Europe. In PNAS: https://t.co/wcdh315bLc

Low-income countries have the worst air pollution, but high-income countries have higher mortality attributable to air pollution because they have older populations, according to a modeling study. In PNAS: https://t.co/ammnWlDGhR

Alaska’s once-clear Salmon River has turned orange and toxic, linked to sulfide mineral weathering from thawing permafrost. The study suggests metal pollution may be contributing to salmon declines. In @SmithsonianMag: https://t.co/2DEnsUOAt1 In PNAS: https://t.co/snys6ABlVk

An eco-friendly method to recover rare earth elements (REEs) from e-waste: Bathe the waste in chlorine gas and heat to 1,348 °C. At this temperature, transition metals in the magnets react with the chlorine gas, vaporize, and leave behind REEs. In PNAS: https://t.co/dAvzWvYLMU

Read highlights in this week’s issue of PNAS: We explore how childhood stress may affect adult health, examine inhaled monoclonal antibodies against metapneumovirus infection, and investigate the atmospheric composition of a rare giant exoplanet. In PNAS: https://t.co/06KKacAo3m

Hydrogen gas does not emit greenhouse gases when burned, though it can emit CO2 when produced, depending on the method. A study of the US policy environment highlights the potential of biomass-derived hydrogen in the absence of carbon pricing. In PNAS: https://t.co/8xZJJjRfGm

One of the most-viewed PNAS articles in the last week is “Unveiling ignis fatuus: Microlightning between microbubbles.” Explore the article here: https://t.co/3DGajI8EfZ For more trending articles, visit https://t.co/Se3TStVPgG.

Using the #DarkEnergySpectroscopicInstrument, researchers mapped evidence suggesting its anti-gravitational strength has weakened in the current cosmic era. Explore this #PNAS Core Concept explainer: https://t.co/GykBaLL43W #Universe #DarkMatter #LBNL #DESI #cosmos

Some seabirds can smell krill while others rely on keen eyesight to spot swarms of the crustaceans. When several bird species flock together, they can take advantage of their complementary abilities, forming multispecies sensory networks. In PNAS: https://t.co/rOA7SAtrKn

Read highlights in this week’s issue of PNAS: We explore maladaptation in yellow warblers, analyze energy storage in concrete structures, and investigate the drying of the Ganga River. In PNAS: https://t.co/U3yJ8BVza4

Opinion piece: How can we improve the efficiency of #BenchToBedside #MedicalAdvances for major #diseases? #OperationWarpSpeed offers a roadmap. In PNAS Front Matter: https://t.co/3NGHmsWXSX #Alzheimers #PublicHealth #pandemic #COVID19

Reducing poverty requires global collaboration and evidence-based solutions. Discover high-impact research from PNAS and @PNASNexus that advances global poverty reduction and equitable growth. Explore now: https://t.co/3msV9g5zhC #SDG1 #NoPoverty #GlobalDevelopment

Louisiana is a hub for the petrochemical industry. Researchers used a mobile laboratory to sample air quality between Baton Rouge and New Orleans and found hazardous air pollutants that create higher-than-acceptable levels of cancer risk. In PNAS: https://t.co/JQm82IEMCh

Honoring Margaret Bryan Davis, a pioneering ecologist whose research reshaped paleoecology and deepened our understanding of long-term forest dynamics. A tireless advocate for equity and diversity, she inspired generations of scientists. Read now: https://t.co/32v0tRxiPU

A study of the Classic Period Maya sheds light on conditions that give rise to cities. Collective projects of agricultural irrigation and defense during an arid era were likely catalysts. As environmental conditions improved, the cities fell. In PNAS: https://t.co/hoavcWdl6b

Opinion piece: To design truly effective strategies and optimally allocate resources for preserving #biodiversity, we must more frequently apply #PredictiveModels to #ConservationBiology. Read now: https://t.co/P1OUqn0qxN #GBF #ConventionOnBiologicalDiversity #conservation

Explore how the James Webb Space Telescope is transforming exoplanet research. This PNAS Special Feature highlights groundbreaking discoveries from JWST’s first observations and outlines future directions in astronomy. Learn more: https://t.co/u95i8eEbeS

Using data from the James Webb Space Telescope, researchers announce four candidate supermassive darks stars, early stars formed from hydrogen and helium and powered by dark matter annihilations rather than nuclear fusion. In PNAS: https://t.co/8CnxiMPbsa

One of the most-viewed PNAS articles in the last week is “Unveiling ignis fatuus: Microlightning between microbubbles.” Explore the article here: https://t.co/xFZf0LWiUQ For more trending articles, visit https://t.co/7rXKRENEvC.

A study links air pollution levels to visits to the veterinarian over five years in the United Kingdom. Both dogs and cats are more likely to need healthcare when fine particulate matter levels are high. In PNAS: https://t.co/GBLWOHOGw5

“Kleptosome” helps #SeaSlug master #photosynthesis—and could offer clues to the #evolution of #symbiosis. In PNAS Journal Club: https://t.co/SXcrnxXSzX #chloroplast