alternatehistory.com

If a terrorist group or nation state wanted to use a dangerous substance against a major city that would be both extremely lethal and disruptive (besides nuclear weapons), what would they use?

Let's say they can only use it on a single square mile so it has to spread on its own after the initial use.

I'm thinking the best choices would be anthrax, nerve gas or some radioactive substance that remains dangerous for decades/centuries.
Top