Originally Posted by
Combat Medic
I've got a book that describes how to make a nuclear bomb. Should the TSA take it from me before I get on a plane?
A while back I ran into the complete genetic code for smallpox on the web.
Fed into an appropriate machine it could be turned into the real thing. (The biggest cost is something around $250k in chemicals--everything needed can readily be ordered. Fortunately, it requires someone with some skill to actually accomplish it.) That makes it far more deadly than plans for an atom bomb as that still requires some rare and highly restricted materials.