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    Do volcanoes or an asteroid deserve blame for dinosaur extinction?

    UC Berkeley scientists have obtained more precise dates for the Deccan Traps volcanic lava flows, linking peak activity more closely to the asteroid or comet impact 66 million years ago and the coincident mass extinction. But if greenhouse gases emitted before the impact created a hothouse climate that set life up for a fall when the impact cooled the planet, those gases did not coincide with the largest lava flows from the Deccan Traps.

    from Phys.org - latest science and technology news stories https://ift.tt/2ItFyXU

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