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  • Deep, carbon-rich Pacific waters intruded into the South Atlantic some 38 to 28 thousand years ago. This deep Pacific expansion could have represented a considerable sink of atmospheric CO2, one that helped initiate the Last Glacial Maximum.

    • Brian A. Haley
    News & Views
  • The Archaean atmosphere may have been well oxygenated, according to a reconsideration of sulfur cycling at that time. This challenges the view that sedimentary sulfur records oxygen-poor conditions during Earth’s first two billion years.

    • Desiree Roerdink
    News & Views
  • Organic carbon in the top metre of Earth’s soils is far older than previously thought, averaging 4,800 years old. These radiocarbon-derived age estimates require us to recalibrate our expectations of ecosystem gains and losses of carbon.

    • Sharon A. Billings
    • Lígia F. T. de Souza
    News & Views
  • Compositional signatures of subducted crust in the deep-mantle sources of ocean island volcanoes in the Atlantic Ocean but not the Pacific reveal that plate motions on Earth’s surface influence the characteristics of Earth’s deepest interior.

    • Richard W. Carlson
    News & Views
  • Large-scale land acquisitions accelerate tropical deforestation, suggests an analysis of two decades of land-deal and forest-cover data. Such exploitation will threaten the future of these globally crucial carbon sinks and biodiversity hotspots.

    • Andreas Neef
    News & Views
  • The morphology and geometry of the plate interface in a subduction zone is heterogeneous and influenced by lower-plate normal faulting, suggests an analysis of seismic data. These properties of subduction interfaces may influence how the largest earthquakes occur.

    • Matt J. Ikari
    News & Views
  • A revised age reconstruction suggests marine-based regions of the Eurasian Ice Sheet melted rapidly, contributing to a major sea-level rise some 14,600 years ago. Such a rapid collapse of massive ice hints at the vulnerability of Earth’s remaining ice sheets.

    • Joseph D. Ortiz
    News & Views
  • Whether Earth’s water was delivered early or late in its formation is debated. The composition of Venus’s atmosphere may indicate that late accretion, the final stage of planet formation, delivered little water to the terrestrial planets.

    • Ramon Brasser
    News & Views
  • Mars’s newest seismometer needed to separate marsquakes from meteorology. Continuous weather observations to keep it honest are revealing new facets of Mars’s churning atmosphere.

    • Nicholas Heavens
    News & Views
  • The biomass of some of the smallest ocean organisms may be stable or even increase in a warming world, suggests a data analysis based on machine-learning techniques.

    • Daniele Iudicone
    News & Views
  • Strengthening and poleward movement of the Southern Westerlies, and increased melting of the Antarctic ice sheet play a primary role in changes observed in the Southern Ocean over the past few decades, according to measurements and modelling.

    • Alessandro Silvano
    News & Views
  • Differential cycling of carbonate and organic carbon in the mantle may link the Great Oxidation Event and the subsequent increase in carbon isotope values, according to a model that links the Earth’s surface and interior.

    • Jeremy K. Caves Rugenstein
    News & Views
  • Tectonic tremor may ultimately be caused by in situ fluid overpressure generated by chemical reactions between a subducting slab and the mantle, according to field and microstructural observations of a shear zone.

    • Kohtaro Ujiie
    News & Views
  • Northern peatlands store over 1,000 Gt of carbon, almost double previous estimates, according to a new analysis of peat core data. The fate of this peat carbon, however, is uncertain in a rapidly changing world.

    • Matthew J. Amesbury
    • Angela Gallego-Sala
    • Julie Loisel
    News & Views
  • The large domes found on the dwarf planet Ceres may not result from cryovolcanism, but from solid-state flow analogous to salt doming on Earth, according to numerical simulations of gravitational loading.

    • Michael Küppers
    News & Views
  • Wet rice cultivation in the Palu Valley, Indonesia, prepared the ground for the devastating liquefaction-induced landslides that were triggered by the Mw 7.5 earthquake in 2018, suggest two studies of the spatial relationship between landslide morphology and irrigation.

    • Phil R. Cummins
    News & Views
  • The structure of the lithosphere is key to reconciling the dynamic topography predicted by mantle convection models with residual topography derived from observations, suggest analyses of both models and data.

    • Nicolas Flament
    News & Views