New York. A person can spend weeks in this port city without ever seeing the ocean. Skyscrapers. Central Park, with its sprawling lawns, trees, paths, vendors, a boathouse and restaurant: an urban refuge.
In 2001, a group of Japanese scientists made a startling discovery at a rubbish dump. In trenches packed with dirt and waste, they found a slimy film of bacteria that had been happily chewing through plastic bottles, toys and other bric-a-brac.
