Having an environmental edge goes a long way with employees. Surveys show that people expect their organizations to take the environment into account when making business decisions—and most don’t feel enough is being done. Top companies, however, are responding by going green in every way, from making their manufacturing processes more efficient to backing local and global sustainability projects. The following pages feature some of the ways the companies on Aon Hewitt’s 2011 Green 30 list have made the environment a big part of business. But first, here’s a look at some environmentally friendly ideas that could revolutionize the workplace in the not-so-distant future.