From Treehugger.com I learned that this guy is a high school science teacher named Greg Craven, set up in his home with a whiteboard and a felt-tipped marker. If you want to see more of his videos (and I understand this video is part of a series with over 40 videos in it), please check Greg's YouTube account.
Yours,
Raz @ Eco-Libris
Eco-Libris: plant a tree for every book you read!
Raz @ Eco-Libris
Eco-Libris: plant a tree for every book you read!