Archie! - man, I've been waiting forever for that...but where are the rest of the pictures?

History of the Biohazard Symbol - fun with semiotics! I have to say, though, I think if I was in one of those focus groups I would have at least guessed something like "bad and/or scary"

Kryptos - would it be tacky to try to work this into an Alias episode?

Words of the Day -
catenary - the curve formed by a perfectly flexible, uniformly dense, and inextensible cable suspended from its endpoints. It is identical to the graph of a hyperbolic cosine, or, something having the general shape of this curve (it just seems like an odd, very specific word)

verglas - a thin coating of ice, as on rock (ditto)