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Nature 399, 313-314 (27 May 1999) | doi:10.1038/20568

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Palaeoclimatology:  Warming without high CO2?

Benjamin P. Flower1

Over the next century, increasing levels of greenhouse gases are expected to raise Earth's mean surface temperatures by some 2-5 °C. To help understand future climate change, Earth scientists are examining ancient periods of extreme warmth such as the Miocene Climatic Optimum of about 14.

  1. Benjamin P. Flower is in the Department of Marine Science, University of South Florida, St Petersburg, Florida 33701, USA.
    e-mail: Email: bflower@seas.marine.usf.edu