Wasps aren't exactly man's best friends, but when it comes to sniffing out trouble, some scientists think they're better, cheaper and easier to train than hounds.
Unlike dogs and electronic sensors currently in use, the wasps are disposable. They cost pennies and take minutes to train. Researchers hope wasps and other insects with a predilection for sniffing -- like honeybees and moths -- will be in widespread use within five to 10 years.
http://www.wired.com/news/technology...w=wn_tophead_6