Greenland crater renewed the debate over an ancient climate mystery
Scientists disagree on what the find means for a controversial comet-impact hypothesis By Carolyn Grambling, Science News, December 17, 2018 https://www.sciencenews.org/article/greenland-impact-crater-top-science-stories-2018-yir https://www.sciencenews.org/article/impact-crater-greenland-asteroid-younger-dryas Erosion has erased most of Earth’s impact craters. Here are the survivors A recent discovery in Greenland may bring the known list to 191 by Emily Demarco, Science News, December 18, 2018 https://www.sciencenews.org/article/erosion-has-erased-most-earth-impact-craters-here-are-survivors Yours, Paul H.
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