Reviews & Analysis

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  • Flotation of aerosols as a film on the hydrocarbon lakes of Saturn’s moon Titan may explain the lakes’ stillness, and could influence the atmospheric hydrocarbon cycle.

    • Isabelle Couturier-Tamburelli
    News & Views
  • Pyroclastic density currents generate a basal air cushion that reduces friction with the ground, reveal laboratory experiments. This explains their ability to travel rapidly over large distances from their volcanic source.

    • Alain Burgisser
    News & Views
  • Thinning and retreat of Jakobshavn Isbræ has reversed in 2016, in tandem with regional ocean cooling.

    • Rebecca H. Jackson
    News & Views
  • A chemically distinct region separates the Indian and Pacific mantle domains as revealed by isotope analyses on rare samples from the Australian–Antarctic Ridge.

    • Pamela D. Kempton
    News & Views
  • A magnitude 7.5 strike-slip earthquake that struck Palu, Indonesia, in 2018 unexpectedly generated a devastating tsunami. Seismic data reveal that its rupture propagated fast, at supershear speed. Whether the two are connected remains to be seen.

    • P. Martin Mai
    News & Views
  • Transition from a weak and erratic geomagnetic field to a more stable one around 560 million years ago, inferred from palaeomagnetic measurements, suggests that the inner core may have solidified around that time, much later than thought.

    • Peter Driscoll
    News & Views
  • Cumulative wildfires or prescribed burning produce different outcomes for the vegetation, suggest two long-term analyses of fire-affected ecosystems. Climate change and land management practices are altering how ecosystems function.

    • Mark A. Cochrane
    News & Views
  • Differences between earthquake sequences in the crust and adjacent uppermost mantle at oceanic transform faults are revealed by a seafloor seismic experiment at the Blanco Transform Fault.

    • Jeffrey J. McGuire
    News & Views