27 BEITRÄGE
PNAS is one of the world's most-cited and comprehensive multidisciplinary scientific journals, publishing more than 3,500 research papers annually. As the flagship peer-reviewed journal of the National Academy of Sciences (NAS), PNAS serves as an authoritative source of high-impact, original research that spans the biological, physical, and social sciences, with global reach and open submission to researchers worldwide.
A unifying framework for the evolution of metazoa and social insects, two major evolutionary transitions
The evolution of life is characterized by major transitions, i.e., the evolution of new targets of selection (e.g., prokaryotes, eukaryotes, multicellular organisms, social insect...
Engineering and land use intensified climate-driven Yangtze River flood hazards since the Little Ice Age
Proceedings of the National Academy of Sciences, Volume 123, Issue 33, August 2026. <br/>SignificanceFloods are among the most devastating natural disasters, yet the long-term...
Pair living emerged early in placental mammals
Understanding how social systems evolved requires knowing the ancestral social organization. Here, we tested the assumption that the first placental mammals were exclusively solitary....
Abrupt transition to irreversible damage in the overdrafted Sacramento Valley aquifer system
Groundwater extraction can cause both reversible and irreversible ground deformation, with the latter leading to permanent land subsidence and loss of groundwater storage capacity....
Fluid polarity shifts initiate and amplify preferential flow in clay-rich media
Preferential flow plays a crucial role in fluid and solute transport and is typically attributed to static heterogeneity in pore structures. Here, we demonstrate...
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