Back on January 3rd 2010, the Mars rover named "Spirit" began its sixth year of diligent exploration (Spirit landed on January 3, 2004). It had been sending back so many photographs that NASA figured out a way to teach the little rover how to detect changes in images, so that it sends only images back to Earth with new information.  For example, if Rover was taking photographs of dust devils, it now pauses and waits until the image changes before taking the next photo. This meant less work for the scientists sifting through the many, many amazing photographs ‘Spirit' sent home. What a great name for such a small machine. It made great discovery. We need that kind of spirit in our world.

I don't know if you saw pictures of the rover back then; it's about the size of a small coffee table. A…