Yang Zongfu spent three years and almost $24,000 creating what he calls "Noah's Ark," a "disaster-proof" ball that he can live inside in the event of an apocalypse. It floats, is impervious to harm, can withstand radiation and high temperatures, and conveniently muffles your friends' conversations about whatever it is you're doing in there. Just goes to show that the line between "disaster-proof" and "disaster-only" is a very fine one indeed. But it's no failure. Zongfu reports that a man in the Shanxi province has already bought fifteen, just in case ...