Greener transportation Hoofing it, bicycling, and taking public transportation are some of the greenest ways to get around.Walkscore calculates how friendly a neighborhood is to get around on foot. Here's a list of regional bicycle associations, which provide maps and tips for cycling safely. Google...

Green your work The Green Office footprint calculator aims to help companies estimate carbon emissions. Telecommuting and teleconferencing prevent carbon pollution from planes, trains, and automobiles. To that end, online meeting services such as Cisco's WebEx and word processors such as Google Docs...