An anonymous reader sends us to Wired for a piece about some declassified Pentagon research from 1998 that has been revealed in a freedom-of-information filing. Apparently the Pentagon has investigated lasers that put voices in your head, among other non-lethal technologies such as microwave heating. The report suggests the techniques could be useful for controlling crowds or in negotiations. There is no context for the research or any indication whether it has continued, although the microwave heating bit sounds rather like the Active Denial System we have discussed recently.