Volume 9 Issue 11, November 2016

Volume 9 Issue 11

The late Palaeozoic was marked by a series of glacial–interglacial cycles. Geochemical and fossil data suggest a role for terrestrial vegetation–carbon cycle feedbacks in the climate response to orbital forcing. The image shows a modern tree fern, Cyathea australis, which was grown in simulated Carboniferous glacial atmospheres of 400 ppm CO2 and 24% O2. The image was produced as a silver-print, photogenic drawing re-enacting old 18th century photographic processes.

Letter p824; News & Views p803

IMAGE: © SIOBHAN MCDONALD;

REPHOTOGRAPHED DIGITALLY BY VINCENT HOBAN

COVER DESIGN: TULSI VORALIA

Editorial

  • Editorial |

    Despite much emphasis on diversity in the US, geoscience remains one of the least diverse scientific disciplines. If we want to achieve and maintain diversity, we need to make our work environments welcoming to a broad spectrum of voices.

Commentary

  • Commentary |

    To keep global warming below 2 °C, countries need long-term strategies for low-emission development. Without these, immediate emissions reductions may lock-in high-emitting infrastructure, hamper collaboration and make climate goals unachievable.

    • Jeffrey D. Sachs
    • , Guido Schmidt-Traub
    •  & Jim Williams

News and Views

Letters

Articles

  • Article |

    A period of continental aridification and ecosystem change occurred about seven million years ago. A global sea surface temperature reconstruction identifies cooling temperatures and a strengthened meridional temperature gradient at this time.

    • Timothy D. Herbert
    • , Kira T. Lawrence
    • , Alexandrina Tzanova
    • , Laura Cleaveland Peterson
    • , Rocio Caballero-Gill
    •  & Christopher S. Kelly