Ah, good, some sound and rational answers to the Pentagon conspiracy theory. (“Je ne vois pas un avion!”)

Also an interesting piece of napkin math calculating the kiloton yield equivalent of the WTC collisions and collapse. Hmmm, 1.9 kilotons and 3.5 kilotons respectively? Just for comparison, here’s a 1 kiloton fission detonation from the nuclear tests of the early 50’s.

Update: The ever-reliable Snopes have a definitive debunk of the Pentagon conspiracy theories, and Popular Mechanics has a full 9/11 myth-debunking section. Also see 911Myths.com.

(If you’re looking for more pictures of nuclear tests, check here and here. Hope you like mushrooms.)