Warp Factor 1 April 2013

An investigation
The saga of a NASA scientist who claims to be on the verge of faster-than-light travel.
[Popular Science]

Why Computers Still Can’t Translate Languages Automatically 11 May 2012

DARPA’s search for meaning
How researchers are trying to use semantic information in machine translation.

The 40-year itch 5 October 2011

How to build a really awesome spaceship, maybe
Would-be space explorers, scientists, and a couple of crackpots gather at DARPA’s 100-Year Starship Symposium to try to get interstellar travel unstuck.