When the walls of the city's largest cemetery collapse, decomposing bodies tumble out - and six thousand corpses are moved into the tunnels of the catacombs. Terrified by ancient beliefs, Parisians refuse to bathe - and develop the art of perfume to mask their body odors. The Chief of Police orders the streets to be paved, and streetlights to be installed. A Baron vows to rid Paris of its filth, and demolishes slums, creates the grand avenues of Paris, and builds hundreds of miles of new sewers. A Parisian invents the garbage can. 60,000 ragpickers create the world's most famous flea market. A band of modern day activists refuse to throw anything away, and turn trash into sculpture, and dead batteries and wine bottle corks into cash.