CERN restarts 'Big Bang' Hadron Collider, seeks dark universe
Voice-controlled GPS helmet to help bikers
Dutch architects show off 3D house-building prowess
Smart bracelet changes design with the touch of a button
DIY robotics device developed
Palestinian students design vest to help the blind navigate
China gets top billing at Germany tech show CeBit
Facebook clarifies content policies
Tech innovations at London's Future Festival 2015