Well-established nonprofit group conducts ecotourism research, publishes articles, provides consumer information, and has a directory of members, including lodging, around the world. With the Rainforest Alliance, it recently started an ecotourism certification standards program.
Sustainable Travel International 720-273-2975
Formed three years ago to bridge the gap between research and consumer information and to promote sustainable development and eco-friendly travel. Offers a carbon-offset program and last month started an eco-certification program that will follow standards laid out by the International Ecotourism Society.
National Geographic Center for Sustainable Destinations www.nationalgeographic.com/travel/sustainable/
Resources on what it calls geotourism, ''tourism that sustains or enhances the geographical character of a place." Here you can find results of the 2002 geotourism study, along with resources for travelers and the society's ''destination scorecards."
Responsible Travel Handbook www.travelearning.com (click on responsible tourism to download)
Created this year for the Educational Travel Conference meeting, this lengthy guide has a wealth of contributors and information.
This website is an outgrowth of a newsletter by journalist Ron Mader, who lives in Mexico. He calls Planeta, which has an active travelers' forum, ''a practical guide for everyone with a serious interest in conscientious travel and eco travel." Planeta lists travel resources and has a lodging and trip directory.
''Lonely Planet Code Green: Trips of a Lifetime That Won't Cost the Earth" By Kelly Lorimer (2006, Lonely Planet Publications)
The first ''green travel" book to be published by Lonely Planet includes dozens of ''responsible travel experiences" and provides traveler information on responsible and eco-travel. Lonely Planet also runs a discussion board on responsible travel at http://thorntree.lonelyplanet.com/
Better World Club
The environmentally conscious alternative to the American Automobile Association, offering auto and bicycle road assistance, has resources on hybrid car rentals, green lodging, and carbon offsets.
The Green Hotels Association www.greenhotels.com
Green Globe 21
Sustainable Travel International
International Ecotourism Club
California Green LodgingProgram
Vermont's Green Hotels www.vtgreenhotels.org