Targeted bioweapons

Worried about biological weapons that can be specifically targeted to, say, disable the ability to store memories, cause the autoimmune system to attack myelin (i.e., mimic multiple sclerosis), or target specific ethnic groups? If not, you might be after you read this article from Technology Review. Unfortunately, some of these things may even be feasible to produce with old technology that is easily available--and if they aren't now, they will be.

(Via Bruce Schneier's blog.)