Tests of a controversial weapon that is designed to heat people's skin with a microwave beam have shown that it can disperse crowds. But critics are not convinced the system is safe. Last week, the Air Force Research Laboratory (AFRL) in New Mexico finished testing the system on human volunteers. The Air Force now wants to use this Active Denial Technology (ADT), which it says is non-lethal, for peacekeeping or riot control at "relatively long range" - possibly from low-flying aircraft. Microwave beam weapon to disperse crowds (New Scientist) | 
