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Uncertainties and subjective choices affecting remaining carbon budgets should be fully considered when applying them to international and national climate policies.
Time capsules of fluid, trapped within the oxide minerals from two iron ore deposits reveal an important role for sediment-derived carbonate–sulfate-rich melts in the concentration of iron, a crucial element for humanity’s development.
Permanent surface deformation caused by the 2019 Ridgecrest earthquakes has been directly measured, constraining the mechanics of surface damage in earthquakes.
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.
Deliberate application of sulfur onto croplands as fertilizer and pesticide probably causes environmental damage similar to historical acid rain events, according to a literature review and four case studies from the United States.
Dynamic interactions between chemical and biological controls govern the stability of soil organic carbon and drive complex, emergent patterns in soil carbon persistence.
A review of the organic carbon cycle explores the interactions between the Earth’s surface and deeper reservoirs, the expanding inorganic controls on the organic carbon cycle, and how these links have strengthened through geological time.
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.
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.
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.
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.
Characterization of hydrothermal plumes in terms of redox, rather than distance from the vent, illuminates the dominant transport processes and fate of metals, focusing on iron and manganese.
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.
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.
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.
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.
Geophysical and meteorological measurements by NASA’s InSight lander on Mars reveal a planet that is seismically active and provide information about the interior, surface and atmospheric workings of Mars.
Direct and indirect greenhouse gas emissions from mining for green technologies need to be accurately and transparently accounted for, as highlighted by a case study of Chilean copper mining.