Amazon warehouses are key to the company’s operations. Items arrive, get sorted and are packaged and shipped off. But they don’t have a reputation for being great places to work. For example, last year, there were those reports about employees urinating in bottles at a U.K. warehouse to avoid taking bathroom breaks.  Now Amazon is offering more public tours of its warehouses. The company says it wants to be transparent about how it operates and to inspire kids. We tagged along with a bunch of Girl Scouts on a tour.