Posthuman Blues

Gene turn-off makes meek mice fearless

Deactivating a specific gene transforms meek mice into daredevils, researchers have found. The team believe the research might one day enable people suffering from fear -- in the form of phobias or anxiety disorders, for example -- to be clinically treated.

(Via KurzweilAI.net.)

Perhaps in an ideal world. I think it's more likely DARPA will seize on this as a way to create better, badder soldiers.