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  • Enhanced formation of clay in marine sediments in the lead up to the end-Permian mass extinction likely pulled the Earth back into a hot, high-CO2 state similar to that of the Precambrian.

    • Hana Jurikova
    News & Views
  • Cellular modelling and geochemical analyses reveal that a dominant group of phytoplankton changed their carbonate production as atmospheric CO2 levels declined from peak levels in the warm early Eocene, hinting at a positive feedback in the global carbon cycle.

    • Rosie M. Sheward
    News & Views
  • Controversy pervaded the June 2022 UN Ocean Conference, with partisan alliances forming around burgeoning environmental and social issues. Yet, out of the talks, emerged strong aspirations across UN states and other stakeholders to restore and protect the ocean.

    • Lisa A. Levin
    News & Views
  • Covering nearly 2,000 years of history, Ele Willoughby traces the glass etching ability of hydrofluoric acid back to its fluorspar origins and explores the modern optics of fluorite.

    • Ele Willoughby
    All Minerals Considered
  • Permeating every aspect of life – and each with a multitude of stories to tell – we celebrate the utility, beauty and wonder of minerals in a new column: all minerals considered.

  • Enhancing natural subsurface hydrogen production through water injection could make a substantial contribution to achieving the low-carbon energy transition that is required to limit global warming.

    • F. Osselin
    • C. Soulaine
    • M. Pichavant
  • Ensemble forecasts from a dynamical model suggest that fluctuations in atmospheric angular momentum and the length of day can be predicted over a year in advance, thereby providing a source of long-range climate predictability.

    • A. A. Scaife
    • L. Hermanson
    • D. Smith
    Article Open Access
  • Seismometers on the NASA InSight lander have identified unusual signals from meteoroid impacts on Mars. Impact locations were confirmed by satellite images of new craters at these sites and directly constrain the martian interior, confirming its crustal structure and ground-truthing the scaling of impact-induced seismicity.

    Research Briefing
  • Over the past 620,000 years, three distinct phases of climate variability in eastern Africa coincided with shifts in hominin evolution and dispersal, according to an analysis of environmental proxy records from a core collected in the Chew Bahir basin of Ethiopia.

    • Verena Foerster
    • Asfawossen Asrat
    • Martin H. Trauth
    Article Open Access
  • Iodine chemistry plays a more important role than bromine chemistry in tropospheric ozone losses in the Arctic, according to ship-based observations of halogen oxides from March to October 2020.

    • Nuria Benavent
    • Anoop S. Mahajan
    • Alfonso Saiz-Lopez
    Brief Communication Open Access
  • Retreat of the West Antarctic Ice Sheet during the late Oligocene was caused primarily by a tectonically driven marine transgression, according to a compilation of Ross Sea surface temperature estimates throughout the Cenozoic.

    • B. Duncan
    • R. McKay
    • J. Bendle