Star Trek Captains Picard and Kirk could talk to any alien, no matter how different it was from humanity, thanks to the universal translator, a magical sci-fi device that explained away why strange civilizations in far-away solar systems all spoke English.
That future just got a little less far-fetched, thanks to Skype Translator, a new preview service that uses technology from Microsoft Research to translate two different languages back and forth in real time.
This is heady stuff, as school kids in Seattle and Mexico City seem to instantly recognize when they chat back and forth in English and Spanish via the Skype service in the video below.

