Is this what a postcard from Mars would look like? NASA seems to think so; it's using this rocky landscape -- Devon Island, the largest uninhabited island on Earth, in the territory of Nunavut in Canada -- as a training ground for future manned missions to Mars. The program, a joint effort of NASA and other international space agencies, is now in its 10th year. All this week, scientists will be running a sim on Devon Island to test space protocols that might come into play on future missions -- alright, fine, scientists will be running around like five-year-olds pretending they're in space.