Scientists have reacted angrily to the revelation that the US military is funding development of a weapon intended to deliver an "excrutiating bout of pain" from over a mile away. The "Pulsed Energy Projectile" (PEP) device "fires a laser pulse that generates a burst of expanding plasma when it hits something solid", the New Scientist explains. If you happen to be that something solid, then you get temporarily incapacitated without suffering permanent injury. That's the theory, but pain reasearchers fear that the proposed riot control weapon could be used for torture, and further doubt a solid ethical basis for the...