More than 2,000 musicians strummed ukuleles in a Japanese port city on Saturday to set a new world record for the largest ever ensemble of the Hawaiian guitar.

Their effort was recognised by Guinness

Scientists on Thursday launched a mission to the seabed off Japan where a massive quake triggered last year's devastating tsunami, to get their first proper look at the buckled ocean floor.

Research

A Japanese-developed robot that mimics the movements of its human controller is bringing the Hollywood blockbuster Avatar one step closer to reality.