Eric Hodel

I found these awesome lectures about how NTSC television and HDTV work. The rest of the course is here (or here) and include how various other pieces of consumer electronics work.

NASA's Spirit rover has begun driving backwards due to a sticky right front wheel. The sticky wheel is being drug along, and is only used for difficult terrain. Spirit currently has 3.5km on its odometer, six times the design distance.

Press Release: NASA's Mars Rovers Roll Into Martian Winter ( Collapse )