The X-47B prototype can land on a flight deck without input from a pilot.
An engineer describes the next-generation surveillance sensor for UAVs, called ARGUS.
Many Earth-observing satellites are nearing the end of their lives.
Gross science: This parasite crawls into a fish s mouth and replaces its tongue.
What started out as a tropical storm evolved into one of New York City s worst nightmares.
NOVA Labs: New solar telescopes are allowing us to see the Sun like never before.
Premiering Winter 2012 on PBS
Airs Thursday, January 31, 2013 at 10:00 p.m. ET/PT. Check your local listings.
This superglue suggests Neanderthals weren t as primitive as once thought.
Watch January 4, 2012 on PBS
How did the ancient Egyptians protect themselves during battle?
The Vikings may have trekked all the way to Iran in search of crucible steel.
A military historian demonstrates how the ancient Egyptians fought from their chariots.
Handwriting analysis technology helps scientists figure out who killed Lindbergh's baby.
NASA untangles why a parachute failed during tests prior to the Curiosity landing.