Has it already been a year since I read about the 4th anniversary of the Mars rovers that just keep rolling along? And they're still rolling after five years of continuous work, on a cold, sandy planet 230 million kilometer away from Earth. For once, the word "awesome" is actually a good fit. If you ever wonder how far the human race has really come since our ancestors first began using tools, you should contemplate this fact for a while. It is absolutely mind-boggling.