Scientists Make Photons Act Like Real-Life Light Saber

via Popular Science http://feeds.popsci.com/c/34567/f/632419/s/31bda9b6/sc/21/l/0L0Spopsci0N0Carticle0Ctechnology0Cscientists0Emake0Ephotons0Eact0Ereal0Elife0Elight0Esaber/story01.htm