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The trace-element compositions of mantle-derived basalts suggest that the asthenosphere has two distinct melt layers, with unique chemical compositions and physical properties.
Pollution by per- and polyfluorinated alkyl substances (PFAS) is widespread in global water resources and likely to be underestimated, according to global analysis of available PFAS data.
The Moon’s primordial solidification is believed to have produced a layer of dense ilmenite cumulates beneath the crust. Remnants of this layer have now been detected under the lunar nearside.
Volcanism after large, caldera-forming eruptions is thought to be muted. Exploration of the partially submerged caldera of Santorini reveals that large explosive eruptions have occurred since the caldera formed.
Canal networks in Southeast Asian peatlands are zones of rapid, light-driven biogeochemical cycling. The canals increase carbon dioxide emissions to the atmosphere and decrease organic carbon export to the ocean.
