If you have more than one vehicle and you probably do choose to use the more fuel-efficient one when possible. On short trips or long, the more efficient vehicle will save gas and generally emit less pollution. Assess the "green-ness" of your vehicle online
. PCToday "Green Tips," practical suggestions to help the college community save energy and money, are provided by the Energy Conservation Subcommittee; email
Chairman Richard C. Taylor, associate professor of plumbing and heating, with items for possible publication.