The Bronx may be up and the Battery down, but Central Park is where an amazing wealth of different sorts of microbes play. iStockphoto hide caption

itoggle caption iStockphoto

Gravel helps keep the floor level and prevents moisture from seeping up. The floor installers are Jean Pierre (left), a mason, and Daniel Shenyi, operations manager for EarthEnable. Courtesy of EarthEnable hide caption

itoggle caption Courtesy of EarthEnable