"When we were in charge of Mars, it was a magnificent place, full of wonders: ancient ruined cities, world-girdling canals, alien races terrible or kind, and a hospitable second home for humanity. Then science got its hands on the planet and basically trashed the place. No canals, no cities, no wise ancients-heck, when science is done, there won't be any life at all on the Red Planet. It's an interplanetary tragedy."Science fiction...