Promoting companies that offer environmental benefits, Google has partnered with The Earth Day Network to provide Have a Green Summer tips for traveling green. Check out special "tours" using Google technologies that highlight businesses that offer a useful green alternative to the status quo, including an alternative fuel car service out of New York, (I actually used Ozo on a previous trip), and earth friendly fun activities pinpointing parks, links to hiking trails and museums.
The tips Google provides are meant to guide searchers and better help those looking for environmentally responsible hotels and accommodations. The tips simply add environmental qualifiers to terms one would normally use. The first of five total tips at this time is to try [environmentally friendly hotel] instead of simply [hotel].