Today you really want to help others discover their greener side. The easiest way to convince friends to reduce, recycle, and reuse is to lead by example. Nagging will only make people go on the defensive. Make your quest to lessen your carbon footprint fun for everybody. Invite friends to the farmer's market for adventurous food shopping. Plan a clothes swap with pals who could use a fashion boost. Ask buddies to come over for a recyclable craft night.