• Hidden carbon layer may have sparked ancient bout of global warming

    10 days ago - By Science Mag

    There is no perfect parallel in Earth's past for present-day climate change-human-driven warming is simply happening too fast and furiously. The closest analog came 56 million years ago, when over the course of 3000 to 5000 years, greenhouse gases soared in the atmosphere, causing at least 5°C of warming and pushing tropical species to the poles.
    The cause of the Paleocene-Eocene Thermal Maximum has long been debated, with researchers invoking exotic mechanisms such as catastrophic releases of methane from the sea floor or even asteroid strikes. But over the past few years, evidence has...
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