For people who want to keep up with environmental news but don't want to drown in a sea of paper, Green Disk offers a wealth of information without filling up the mailbox or the local landfill. The Green Disk: Paperless Environmental Journal comes on a computer diskette in Mac or DOS format. Included in the December-January diskette is information about EcoNet, the Institute for Global Communication's computer network, along with listings of environmental electronic bulletin board services and tips for practicing "green" computing. Each issue of the green Disk contains an index to recently published environmental literature, as well as the full text of Sierra Club's National News Report and Smithsonian's Biological Conservation Newsletter. Other features include listings of upcoming meetings and conferences, college programs in environmental studies, job openings and press releases from environmental organizations. Subscriptions cost $35 per year for six issues. Back issues are available for $5 each. For more information, contact The Green Disk, P.O. Box 3224, Washington, DC 20007 (202/337-4175).