Sustainable tourism is conscientious travel. It means being careful with the environments you explore, and respecting the communities you visit. Two overlapping components of sustainable travel are ecotourism and ethical tourism. The International Ecotourism Society (TIES) defines ecotourism as responsible travel to natural areas that conserves the environment and improves the well-being of local people.
You can find some eco-friendly travel tips and statistics, as well as touring companies and associations -- listed by destination under "Travel Choice" -- at the TIES website, www.ecotourism.org. Also check out Ecotravel.com, which lets you search for sustainable touring companies in several categories (water-based, land-based, spiritually oriented, and so on).
Responsible Travel (www.responsibletravel.com) is a great source of sustainable travel ideas; the site is run by a spokesperson for ethical tourism in the travel industry. Sustainable Travel International (www.sustainabletravelinternational.org) promotes ethical tourism practices, and manages an extensive directory of sustainable properties and tour operators around the world.
In the U.K., Tourism Concern (www.tourismconcern.org.uk) works to reduce social and environmental problems connected to tourism. The Association of Independent Tour Operators (AITO) (www.aito.co.uk) is a group of specialist operators leading the field in making holidays sustainable.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.