Thomas Lee Elifritz

http://geoscience.wisc.edu/geoscience/wp-content/uploads/2011/05/liu_pnas_2012_YD_CO2.pdf

Younger Dryas cooling and the Greenland climate response to CO2, Zhengyu Liu, Anders E. Carlson, Feng He, Esther C. Brady, Bette L. Otto-Bliesner, Bruce P. Briegleb, Mark Wehrenberg, Peter U. Clark, Shu Wu, Jun Cheng, Jiaxu Zhang, David Noone, and Jiang Zhu, Proceedings of the National Academies of Science (2012)

http://www.pnas.org/content/early/2012/06/14/1204453109.abstract

Very high-temperature impact melt products as evidence for cosmic airbursts and impacts 12,900 years ago, Ted E. Bunch, Robert E. Hermes, Andrew M.T. Moore, Douglas J. Kennett, James C. Weaver, James H. Wittke, Paul S. DeCarli, James L. Bischoff, Gordon C. Hillman, George A. Howard, David R. Kimbel, Gunther Kletetschka Carl P. Lipo, Sachiko Sakai, Zsolt Revay, Allen West, Richard B. Firestone, and James P. Kennett, Proceedings of the National Academies of Science (2012)

IF a cosmic impact participated in all of this – it would have left evidence of flooding.

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