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Mark Sean de Cantual posted an update 6 years, 4 months ago

Large comet/ asteroid impact crater discovered in Greenland under ice. This one would have hurt…..humanity. https://www.sciencemag.org/news/2018/11/massive-crater-under-greenland-s-ice-points-climate-altering-impact-time-humans?utm_campaign=ScienceNow&utm_source=JHubbard&utm_medium=Facebook