The spiralling cost of invasive species

Some aliens arrived as stowaways. Others were brought in deliberately, for fun or profit. And others were so tiny that nobody noticed them until way too late.

Star Wars saga to go 3-D in new release

George Lucas' cult sci-fi saga Star Wars is being reworked for re-release in three dimensions starting in 2012, Lucas Films announced Wednesday.

Robot cat Doraemon's gadgets come to life in Japan show

For four decades Doraemon, a blue robot cat from the 22nd century, has been an icon of Japan's manga comic world -- but now some of its coolest sci-fi gadgets exist in the real world.

The 'sci' behind the 'fi'

As the voyagers of the Starship Enterprise boldly went to explore new worlds week after week on Star Trek, they used a host of futuristic technologies — including tricorders, holodecks, teleportation systems and warp drives ...

'Avatar' trailer debuts online amid buzz

(AP) -- Social networking sites were abuzz Thursday over an online trailer for "Avatar," just as extended previews of the 3D sci-fi adventure were hitting screens at theaters down under.