xkcd

Randall Munroe, creator of xkcd, gives an Authors@Google talk in 2007 about the webcomic and his background, followed by audience Q&A. Donald Knuth and Guido van Rossum ask questions during the session.

Randall Munroe of xkcd answers what would happen if you swam in a spent nuclear fuel pool, and how much radiation you would receive at the surface versus at depth.