Probing Question: Why did mammals survive the 'K/T extinction'? Thursday by Nick Bascom, Research/Penn State, January 28, 2010 http://live.psu.edu/story/44042 Why Did Mammals Survive the 'K/T Extinction'? Science Daily January 31, 2010, http://www.sciencedaily.com/releases/2010/01/100131221348.htm Yours, Paul Heinrich