Joe Letteri remembers the day, almost exactly 20 years ago, when he first glimpsed the wondrous world of "Avatar." Letteri, the pioneering senior visual-effects supervisor at WÄ"tā FX in New Zealand, ...

Archaeologists say they have found the oldest known instance of fire setting, a key moment in human evolution.

The first trailer for Avatar: The Last Airbender season 2 is here – and it's teases one hell of an introduction for a ...