This is an "animated" power point examination of what happened at Fukushima. It is EXCELLENT. I suggest you push on the youtube video to see the entire video ... it's too large for the column and I can't adjust it, unfortunately. Or go to Joanna's page which is linked at the bottom.
It only takes 6 minutes, but well worth the effort !!
A video transcoded & edited by yrs. truly, from the EXCELLENT powerpoint presentation originally done by Dr. Matthias Braun, March 29, 2011, under AREVA's umbrella, that (h/t Corporanon, again) came to my attention in a post over at the Energy From Thorium weblog,
From the introduction by Kirk Sorensen.