As 20-year-old Hailey Daniswicz flexes muscles in her thigh, electrodes attached to her leg instruct a computer avatar to flex its knee and ankle - parts of Hailey's leg that have been missing since 2005.
Iran said one of its nuclear scientists was killed today by a magnet bomb fixed to his car by a motorcyclist and blamed Israel for the attack, intensifying diplomatic tensions the West over Tehran's nuclear program.
Mexico's Popocatepetl volcano spewed out huge clouds of ash and fiery rock overnight, closing a local airport on Saturday and frightening nearby villagers, already on edge after weeks of increased activity.