MI5 warns Scotland Yard over policemen linked to terror | Printable electronic sensors of volatile compounds embedded in textiles | Experts: burying plutonium to prevent nuclear proliferation |Internet safe spot planned at .secure domain |Mysteries of rogue earthquake off Sumatra examined |Report: 8th-grade students still lag in science |Preparing for the digital defense of the realm |Israel’s military looks to the sea |U.S. spy blimps loiter Afghan skies |Iran, the next cyberthreat to U.S.|USDA to test beef for more strains of E. coli |Drug war at sea: rise of the narco subs