Browse Articles

  • News & Views |

    A regional oxygenation event 1.6 billion years ago coincided with the appearance of large fossils, but whether the availability of oxygen was the primary driver of the diversification of multicellular organisms remains to be seen.

    • Emma U. Hammarlund
  • Article |

    Microbe-mediated oxidation may account for at least 5% of the global dissolved organic carbon loss from the deep ocean, according to carbon isotope analyses on cool crustal fluids circulating through the Mid-Atlantic Ridge.

    • Sunita R. Shah Walter
    • , Ulrike Jaekel
    • , Helena Osterholz
    • , Andrew T. Fisher
    • , Julie A. Huber
    • , Ann Pearson
    • , Thorsten Dittmar
    •  & Peter R. Girguis
  • News & Views |

    Enhanced upwelling and CO2 degassing from the subpolar North Pacific during a warm event 14,000 years ago may have helped keep atmospheric CO2 levels high enough to propel the Earth out of the last ice age.

    • Samuel L. Jaccard
    •  & Eric D. Galbraith
  • News & Views |

    Geoscientists are training computers to learn from a wide range of geologic data and, in the process, the machines are teaching geoscientists about the workings of Earth.

    • Chris Marone
  • Article |

    The oxygenation of deeper continental shelf waters during the Mesoproterozoic coincided with the appearance of multicellular eukaryotes, according to geochemical and sedimentological analyses of the Yanliao Basin, China.

    • Kan Zhang
    • , Xiangkun Zhu
    • , Rachel A. Wood
    • , Yao Shi
    • , Zhaofu Gao
    •  & Simon W. Poulton
  • Article |

    The upwelling of carbon- and nutrient-rich waters in the subpolar North Pacific during the Bølling–Allerød supported high productivity and CO2 outgassing, as well as contributing to regional hypoxia, marine sediment analyses suggest.

    • William R. Gray
    • , James W. B. Rae
    • , Robert C. J. Wills
    • , Amelia E. Shevenell
    • , Ben Taylor
    • , Andrea Burke
    • , Gavin L. Foster
    •  & Caroline H. Lear
  • Article |

    Farmland management promotes tree cover around villages in the semi-arid Sahel of West Africa, according to analyses of satellite imagery. This implies that a higher population density does not always lead to reduced tree cover.

    • Martin Brandt
    • , Kjeld Rasmussen
    • , Pierre Hiernaux
    • , Stefanie Herrmann
    • , Compton J. Tucker
    • , Xiaoye Tong
    • , Feng Tian
    • , Ole Mertz
    • , Laurent Kergoat
    • , Cheikh Mbow
    • , John L. David
    • , Katherine A. Melocik
    • , Morgane Dendoncker
    • , Caroline Vincke
    •  & Rasmus Fensholt
  • News & Views |

    West African farmers adjust tree cover to realize the co-benefits of agroforestry, according to analyses of remote sensing data.

    • Niall P. Hanan
  • Article |

    Rocky planets dominated by intrusive magmatism can cool more efficiently than those dominated by extrusive volcanism, according to numerical simulations of mantle convection.

    • Diogo L. Lourenço
    • , Antoine B. Rozel
    • , Taras Gerya
    •  & Paul J. Tackley
  • Editorial |

    Whether the climate of early Mars was warm and wet or cold and dry remains unclear, but the debate is overheated. With a growing toolbox and increasing data to tackle the open questions, progress is possible if there is openness to bridging the divide.

  • Article |

    Grounding lines in parts of West Antarctica, East Antarctica and the Antarctic Peninsula retreated faster than typical post-glacial pace, according to satellite observations and ice geometry measurements.

    • Hannes Konrad
    • , Andrew Shepherd
    • , Lin Gilbert
    • , Anna E. Hogg
    • , Malcolm McMillan
    • , Alan Muir
    •  & Thomas Slater
  • News & Views |

    A comprehensive assessment of grounding-line migration rates around Antarctica, covering a third of the coast, suggests retreat in considerable portions of the continent, beyond the rates expected from adjustment following the Last Glacial Maximum.

    • Ryan T. Walker
  • News & Views |

    Multi-disciplinary analyses of Earth’s most destructive volcanic systems show that continuous monitoring and an understanding of each volcano’s quirks, rather than a single unified model, are key to generating accurate hazard assessments.

    • Christy B. Till
    • , Matthew Pritchard
    • , Craig A. Miller
    • , Karalee K. Brugman
    •  & Juliet Ryan-Davis
  • Article |

    The recurrence time of megathrust earthquakes in Chile may be controlled by frictional contrasts at depth, according to analyses of stress build-up and release related to the December 2016 southern Chile earthquake.

    • M. Moreno
    • , S. Li
    • , D. Melnick
    • , J. R. Bedford
    • , J. C. Baez
    • , M. Motagh
    • , S. Metzger
    • , S. Vajedian
    • , C. Sippl
    • , B.D. Gutknecht
    • , E. Contreras-Reyes
    • , Z. Deng
    • , A. Tassara
    •  & O. Oncken
  • News & Views |

    The annual quantity of metal being used by humans has been on the rise. A new analysis of 43 major economies reveals the extent to which year-to-year fluctuations in metal footprints have been in lockstep with countries’ economic growth and changes in investment spending.

    • Paul J. Burke
  • Article |

    Terrestrial vegetation contributes to the seasonal variation of atmospheric mercury concentrations, according to analyses of atmospheric trace gas dynamics and satellite data. The data show that the photosynthetic activity of vegetation correlates with atmospheric mercury.

    • Martin Jiskra
    • , Jeroen E. Sonke
    • , Daniel Obrist
    • , Johannes Bieser
    • , Ralf Ebinghaus
    • , Cathrine Lund Myhre
    • , Katrine Aspmo Pfaffhuber
    • , Ingvar Wängberg
    • , Katriina Kyllönen
    • , Doug Worthy
    • , Lynwill G. Martin
    • , Casper Labuschagne
    • , Thumeka Mkololo
    • , Michel Ramonet
    • , Olivier Magand
    •  & Aurélien Dommergue
  • Article |

    Observations of the radiative forcing from methane at the Earth’s surface are influenced by absorption effects from water vapour, according to spectroscopic measurements and line-by-line calculations.

    • D. R. Feldman
    • , W. D. Collins
    • , S. C. Biraud
    • , M. D. Risser
    • , D. D. Turner
    • , P. J. Gero
    • , J. Tadić
    • , D. Helmig
    • , S. Xie
    • , E. J. Mlawer
    • , T. R Shippert
    •  & M. S. Torn