PBS OPB Japan's Killer Quake 9.0 NOVA 3-30-2011 prt2

PBS OPB Japan's Killer Quake 9.0 NOVA 3-30-2011 prt2 http://www.youtube.com/watch?v=SMgSOYaTI1g prt 1a http://www.youtube.com/watch?v=2ob9dl_EknU prt 1b