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Younger Dryas impact review paper accepted for publication in Earth-Science Reviews

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The following article has been accepted in Earth-Science Reviews.  © 2021. This author manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ The article is now published and freely available until mid-July 2021 at Earth-Science Reviews . The Younger Dryas impact hypothesis: Review of the impact evidence   Martin B. Sweatman, Institute of Materials and Processes, School of Engineering, King’s Buildings, University of Edinburgh, UK. EH9 3FB martin.sweatman@ed.ac.uk Keywords: cosmic impact, Younger Dryas, platinum anomaly, impact microspherules, nanodiamonds, climate change, Clovis culture, megafaunal extinctions   Abstract Firestone et al., 2007, PNAS 104(41): 16016-16021, proposed that a major cosmic impact,  circa  10,835 cal. BCE, triggered the Younger Dryas (YD) climate shift along with changes in human cultures and megafaunal extinctions. Fourteen years after this initial work the overwhelming consensus of research