Each time you take a flight or drive a car, CO2 is released into the atmosphere. You can help neutralize this danger to our planet through "carbon offsetting" -- paying someone to reduce your CO2 emissions by the same amount you've added. Carbon offsets can be purchased in the U.S. from companies such as Carbonfund.org (www.carbonfund.org) and TerraPass (www.terrapass.org), and from Climate Care (www.climatecare.org) in the U.K.
Although you could argue that any vacation that includes an airplane flight can't be truly "green," you can go on holiday and still contribute positively to the environment. In addition to purchasing carbon offsets from the companies mentioned above, you can take other steps toward responsible travel. Choose forward-looking companies who embrace responsible development practices, helping preserve destinations for the future by working alongside local people. An increasing number of sustainable tourism initiatives can help you plan a family trip and leave as small a "footprint" as possible on the places you visit.
Responsible Travel (www.responsibletravel.com), run by a spokesperson for responsible tourism in the travel industry, contains a great source of sustainable travel ideas.
You can find eco-friendly travel tips, statistics, and touring companies and associations -- listed by destination under "Travel Choice" -- at the TIES website, www.ecotourism.org. Also check out Conservation International (www.conservation.org) -- which, with National Geographic Traveler, annually presents World Legacy Awards (www.wlaward.org) to those travel tour operators, businesses, organizations, and places that have made a significant contribution to sustainable tourism. Ecotravel.com is part online magazine and part ecodirectory that lets you search for touring companies in several categories (water-based, land-based, spiritually oriented, and so on).