Tau Ceti has habitable planet, just 12 light years away

One of the closest stars to our own, Tau Ceti, appears to have five planets, including one that's in the so-called habitable zone and could be suitable for life.

Potentially habitable planet found practically in our back-yard

Astronomers have at last discovered a nearby Earth-like planet that could easily have liquid water - and life.

Robot baby learns first words

The best way for robots to learn language could be the same way small children do - through interaction with adults.