A>>B
Supplier of alternative and eco-friendly modes of transport.
http://www.agotob.com/

Act on C02
Advice, tips and tools for car drivers, to help them reduce their carbon emissions.
http://www.dft.gov.uk/ActOnCO2/

Amazing Environmental Organizations Web Directory
This site bills itself as "earth's biggest environment search engine".
http://www.webdirectory.com/

Association of Independent Tour Operators
Responsible travel guidelines.
http://www.aito.co.uk/corporate_Responsible-Tourism.asp

Bedouin Paths
Join a hiking tour of Egypt's Sinai and raise money for a good cause in the process.
http://www.bedouinpaths.com/

Better World
A wealth of ecological links grouped under a variety of subject headings.
http://www.betterworld.com/Links?Get2?catid=19

Beyond Tourism
Sustainable tourism search engine.
http://www.beyondtourism.com/

Big Five
A premium luxury tour company offering travellers quality eco-tours and soft adventure travel to more than 48 destinations worldwide.
http://www.bigfive.com/

Biobank.it
Specializes in agricultural tours of Italy.
http://www.biobank.it/en/

Breathing Earth
Real-time information on countries' birth and death rates, as well as on their carbon dioxide emission levels.
http://www.breathingearth.net/

British Trust for Conservation Volunteers
Environmental conservation volunteering throughout the UK and around the world.
http://www.btcv.org.uk/

Carbon Planet
Carbon offset project for Australian travellers.
http://www.carbonplanet.com/

Carbon Zero.ca
Help cut greenhouse gases in Canada and worldwide.
http://www.carbonzero.ca/

Carbon Zero.co.nz
Offers a highly configurable carbon emissions calculator, as well as opportunities to counter your carbon footprint.
http://www.carbonzero.co.nz/calculators/calculators_tourist.asp

Celestia.co.uk
Essays discussing the impact of modern tourism, both from a moral and environmental viewpoint.
http://www.celestia.co.uk/wexas/hn1_2.htm

Cheeseman's Ecology Safaris
Tours to places famed for their abundance of photogenic mammals and birdlife.
http://www.cheesemans.com/

Choose Climate
An online carbon emissions calculator that puts the figures it produces in context, in order to illustrate the true cost of a flight.
http://chooseclimate.org/flying/

Climate Care
Use this site to calculate your greenhouse gas emissions from flying, driving and energy use.
http://www.climatecare.org/

Climate Challenge
Undestand climate change through this government website dedicated to the topic.
http://www.climatechallenge.gov.uk/

C02 Balance.com
The website offers C02 calculators, tips to help you minimise your carbon emissions and schemes to help you offset your unavoidable carbon residue.
http://www.co2balance.com/
http://www.carbonzero.co.uk/

C02 Carbon Clear
As well as offering advice on how to reduce your carbon footprint, Carbon Clear also sponsors packages to help you offset your carbon emissions.
http://www.carbon-clear.com/

Conservation International
CI works to ensure that local people benefit from tourism through its conservation programs. The site offers a raft of information on ethical travel and eco-tourism destinations.
http://www.conservation.org/
http://www.ecotour.org/

Coral Cay Conservation
Help protect threatened coral reefs and tropical rainforests while having the adventure of your life.
http://www.coralcay.org/

CrickAid.net
Allows cricket fans to "combine overseas tours with a few days getting stuck into development and cricket related projects in the host country".
http://www.crickaid.net/

Discovery Initiatives
Specialists in nature and wildlife holidays, safaris, wilderness trips and small boat and whale watching cruises across the globe.
http://www.discoveryinitiatives.co.uk/

Earthfoot's Ecotour Posterboard
Lists small-scale, locally produced, low-impact eco-tours.
http://www.earthfoot.org/

Earthscan
Leading publisher of ethical travel guides.
http://www.earthscan.co.uk/

Earthwatch
Interested in joining and expedition? Earthwatch can put you in touch with scientists running projects all over the globe who could do with a helping hand.
http://www.earthwatchexpeditions.org/
http://www.earthwatch.org/expedselect.html
http://www.earthwatch.org/location/guide.html

EarthWise Journeys Inc
Independent resource and clearing house for socially responsible travel: journeys by destination, eco-expeditions, cross-cultural journeys, volunteer expeditions, adventure travel, women's travel, art and nature.
http://home.teleport.com/~earthwyz/

Eco Club
An international ecotourism club and online ecotourism directory.
http://www.ecoclub.com/

Eco Travel
Online ecotourism directory and magazine.
http://www.ecotravel.com/

Eco Travel Center
The Eco Travel Center offers destination profiles of some of the most lush and culturally diverse spots in the world.
http://www.ecotour.org/destinations/index.htm

Eco Voyager
A US-based tour operator with trips to Costa Rica, Chile, Venezuela, Peru, Ecuador and the Glapagos Islands.
http://www.ecovoyager.com/

Eco-Portal
Information source for global environmental sustainability.
http://www.eco-portal.com/

Eco-travel
Eco-tours in Africa.
http://eco-travel.virtualave.net/

EcoClub
Join this international club and you can book eco-lodges directly and commission-free, get in touch with eco-travellers from over 50 countries, chat online, read the latest eco-tourism news and more.
http://www.ecoclub.com/

Ecotravel Center
Eco-sensitive journeys to destinations worldwide offered by the Conservation International Foundation of Washington DC.
http://www.ecotour.org/

Ecotravel.com
Travel planning and searchable directory of ecological, cultural and spiritual holidays.
http://www.ecotravel.com/

Ecovolunteer
Help save the environment and holiday at the same time.
http://www.ecovolunteer.org/

ElderTreks Travel
Small-grouped adventure travel for those aged 50 or more.
http://www.eldertreks.com/

emPivot
Watch and share green-related videos.
http://www.empivot.com/

Environmental Sustainability Index
Discover which countries in the world take best care of their natural environment.
http://www.yale.edu/esi/

Ethanol
An American website promoting the use of ethanol fuel for vehicles.
http://www.drivingethanol.org/

Ethical Escape
Contains country guides, travel advice, health advice and details of ethical, ecologically sound holidays and eco-friendly holiday accommodation worldwide.
http://www.ethicalescape.com/

Ethical Junction
A directory of ethical enterprises and organizations committed to the provision of ethical products and services.
http://www.ethical-junction.org/

Exodus
Ethical travel specialist.
http://www.exodus.co.uk/

Explore
Offers tours that allow you discover the world in a responsible way.
http://www.explore.co.uk/

Faroe Islands Tourist Guide
The Faroe Islands - a birdwatchers paradise.
http://www.faroeislands.com/GB/birds.html

First Choice Holidays
A leading British tour operator trumpets its efforts to promote sustainable and responsible tourism.
http://www.fcenvironmentandpeople.com/

Flight Pledge Union
Advocates the reduction of air travel worldwide, because of the impact it has on the environment. The Union encourages people to sign a pledge on its website, to reduce their travel in the coming year.
http://www.flightpledge.org.uk/

Forest Conservation Portal
Rainforest, forest and bio-diversity conservation news and information.
http://www.forests.org/

ForestWorld
This site contains basic forest resource information covering the extent of forested land, brief background profiles of the forest sector, and a synopsis of the geography, language, and climate of each of over 170 countries.
http://www.forestworld.com/public/country/countryframe.html

Forum International Travel
Pioneers of environmentally sound and culturally educational travel programmes to destinations worldwide.
http://www.foruminternational.com/

Freecycle
Global network of recyclers.
http://www.freecycle.org/

Friends of Conservation
Includes a combined air distance and carbon emissions calculator.
http://www.friendsofconservation.org.uk/calculatenew1a.asp

FTSE4GOOD
Measures the performance of companies that meet globally recognised corporate responsibility standards.
http://www.ftse.com/Indices/FTSE4Good_Index_Series/index.jsp

Future Forests
Calculate your C02 emissions and learn how to reduce them.
http://www.futureforests.com/

Global Rich List
Find out how rich you are.
http://www.globalrichlist.com/

Global Vision International
Specializes in volunteer abroad holidays, conservation expeditions and TEFL courses overseas.
http://www.gvisin.com/
http://www.gviusa.com/
http://www.gvi.co.uk/
http://www.gviaustralia.com/

Global Volunteer Projects
Offers conservation projects, medical placements and many other assignements in the developing world for volunteers who want to make a difference.
http://www.globalvolunteerprojects.org/

Go Differently
Small group and tailor-made ethical holidays and volunteering trips to Asia.
http://www.godifferently.com/

Green Globe
Search for companies that have been awarded the Green Globe award in recognition of their efforts to promote environmentally responsible travel and tourism.
http://www.greenglobe.org/

Green Tourism Business Scheme
A British sustainable tourism certification scheme. Use the database on the website to find green travel and tourism firms all over the country.
http://www.green-business.co.uk/

Green Travel
A limited selection of green and eco-travel links.
http://www.green-travel.com/

Green.TV
Broadcasts programmes covering a host of environmental issues.
http://www.green.tv/

Greenforce
Non-profit conservation and adventure travel specialists.
http://www.greenforce.org/

Greenstop
A directory of green hotels and travel companies all over the world that have been accredited by the Greenstop scheme.
http://www.greenstop.net/

Grow a Forest
Offset your carbon emissions by planting a tree.
http://www.growaforest.com/

Guardian Unlimited - Environment
A microsite from one of Britain's leading newspapers that contains a wealth of articles on environmental issues such as climate change, conservation and pollution.
http://environment.guardian.co.uk/

Hands Up Holidays
Promises inspiring eco-tours that combine sightseeing with volunteering.
http://www.handsupholidays.co.uk/

Ideal Bite
Practical guide to eco-living.
http://www.idealbite.com/

Imaginative Traveller
A small group adventure tour company that offers volunteering holidays and ethical breaks to locations worldwide.
http://www.imaginative-traveller.com/

Inkanatura.com
Archaeology, birding, nature and wildlife tours of South America.
http://www.inkanatura.com/

International Mountain Explorers Connection
Promotes responsible and sustainable tourism in the mountainous regions of the world by arranging homestay programs for IMEC members.
http://www.hec.org/

Kasbah
An index of websites dedicated to the caring side of tourism.
http://www.kasbah.com/activitytravel/eco.htm

mobGAS
Software that allows you to track your carbon footprint using your mobile phone.
http://mobgas.jrc.ec.europa.eu/
http://mobgas.jrc.it/download

MSN.com
Focus on the world's greenest cities.
http://liveearth.uk.msn.com/green/galleries/green%20cities%20gallery.aspx?imageindex=1#5217870

Mystic Blue
Take an eco-sailing tour of the Aegean and Ionian Seas and discover the abundance of wildlife and nature contained in both.
http://www.mystic-blue.org/

Natural Discovery
Promotes environmentally sensitive breaks and accommodation in the UK.
http://www.naturaldiscovery.co.uk/

Naturetrek
Birdwatching, botanical and natural history tours, treks and cruises all expertly guided by Britain's leading naturalists.
http://www.naturetrek.co.uk/

North South Travel
Book a flight through this travel agency and a portion of money is donated to grassroots charities in the developing world.
http://www.northsouthtravel.co.uk/

On the Go
A British tour operator that runs eco tours to Egypt that include the chance for travellers to contribute to the preservation of the country's environment culture.
http://www.egyptonthego.com/Eco_tours
http://www.onthegotours.com/

One World Journeys
Aims to build the largest collection of stories on the Internet about the natural world. Contribute your own tale or watch the photo-documentaries on expeditions around the world.
http://www.oneworldjourneys.com/

Our World Travel
Our World Travel was established 10 years ago to provide a travel agency with the primary task of promoting responsible travel.
http://www.ourworldtravel.com.au/

Passport to the Rainforest
Multimedia guide to the world's rainforests.
http://www.passporttoknowledge.com/rainforest/main.html

Peace Boat
The Peace Boat is a chartered passenger ship that travels the world on peace voyages that promote human rights, equal and sustainable development and respect for the environment.
http://www.peaceboat.org/

People Tree
A fair trade fashion company.
http://www.peopletree.co.uk/

Plane Stupid
A British protest group that wants to see the end of airport expansion and short haul flights, as well as the introduction of a tax on aviation fuel and plane tickets, in order to preserve the planet.
http://www.planestupid.com/

Planet Ark
Green travel resource that covers everything from acid rain to zoos.
http://www.planetark.org/index.cfm

Planeta.com
Eco-travel and tours in Latin America.
http://www.planeta.com/

Protect New Zealand
The site offers a range of information about bio-security and how you can help to protect New Zealand's fragile environment, economy and animal, plant and human populations.
http://www.protectnz.org.nz/

Real Climate
A website used by climate scientists to comment on articles about climate change and global warming.
http://www.realclimate.org/

Rechargeable Battery Recycling Corporation
Recycle your rechargeable phone, laptop, camera and camcorder batteries.
http://www.call2recycle.org/
http://www.rbrc.com/

Recycle your Jeans
Turn your old pair of jeans into stylish and comfy sandals.
http://www.recycleyourjeans.com/

Reef and Rainforest Tours Ltd
Established for over twelve years, Reef and Rainforest Tours Ltd specialize in designing and facilitating superb natural history holidays to twelve of the best wildlife destinations on Earth.
http://www.reefrainforest.co.uk/

Responsible Travel
Responsible travel portal: environmentally friendly holidays, campaigns, surveys, travel tips, information and links.
http://www.responsibletravel.com/

Responsibletravel.com
This site claims to offer the world's largest selection of responsible/eco and adventure holidays.
http://www.responsibletravel.com/

Responsible-Travel.org
Tips and advice on responsible travel for the savvy traveller.
http://www.responsible-travel.org/

Silverjet
Silverjet also allows passengers to offset the carbon emissions generated by their trip across the Atlantic, making it the world's first carbon neutral airline.
http://www.flysilverjet.com/

Ski Club of Great Britain
Check the environmental record of ski resorts all over the globe.
http://www.skiclub.co.uk/skiclub/resorts/greenresorts/

Society for Environmental Exploration
A charity that offers volunteers the chance to get involved in a myriad of global conservation projects.
http://www.frontier.ac.uk/

Spirit of the Sahara
Trek the Sahara in the company of knowledgeable local guides.
http://www.spiritofthesahara.co.uk/

Sustainable Development Education - Footprint Calculator
An online calculator that helps you work out how much of an impact you have on the environment in your daily life and how much of the planet's resources you are consuming.
http://staging.ltscotland.org.uk/lts/sustainabledevelopment/findresources/globalfootprint/learners/
footprintcalculator/index.asp

Telegraph - Earth
News and information about green issues courtesy of one of Britain's leading newspapers.
http://www.telegraph.co.uk/earth

Terrapass
Create a personal emissions report by adding up all the flights you take.
http://www.terrapass.com/flight/flightcalc.html

The CarbonNeutral Company
Contains a carbon emissions calculator, as well as information and advice on reducing your carbon footprint on the planet.
http://www.carbonneutral.com/

The International Ecotourism Society
Contains a directory of travel agents and tour operators, accommodation, transport and other eco-travel services.
http://www.ecotourism.org/

The International WWOOF Association
Dedicated to helping those who would like to volunteer on organic farms internationally.
http://www.wwoof.org/

The Leap
Voluntary work and sporting programmes that combine adventure travel with sustainable eco-tourism, conservation and community projects.
http://www.theleap.co.uk/

The Times
Green travel portal from one of Britain's leading newspapers.
http://travel.timesonline.co.uk/greentravel

The Travel Foundation
Find out how you can get more out of your holiday and help care for the places you visit at the same time.
http://www.thetravelfoundation.org.uk/

Traidcraft
Operates tours to meet the producers who supply the fair trade products sold by this charity.
http://meetthepeople.skedaddle.co.uk/
http://www.traidcraft-tours.com/
http://www.traidcraft.co.uk/

Transitions Abroad
Links and resources for the environmentally friendly traveller.
http://www.transabroad.com/listings/travel/responsible/index.shtml

Travel Wisely
Eco tours and wildlife tours in India.
http://www.travel-wisely.com/

TrekForce Worldwide
A charity that promises tough, valuable and well organized conservation projects and placements in some of the oldest rainforests in the world.
http://www.trekforceworldwide.com/
http://www.trekforce.org.uk/

Tribes Travel
An award winning travel company that offers quality holidays based on fair trade principles.
http://www.tribes.co.uk/

Turtle Tours
A American company offering culturally sensitive tours to meet nomadic and tribal people around the world.
http://www.turtletours.com/

UK Emissions Trading Group
Information about both the domestic and European emissions trading schemes.
http://www.uketg.com/

UNESCO-MAB
Worldwide index of biosphere reserves.
http://www.unesco.org/mab/

Whale and Dolphin Conservation Society
A nonprofit organization dedicated to the conservation and welfare of whales, dolphins and porpoises worldwide.
http://www.wdcs.org/

Wikipedia
Find out more about Brazil's pro-ethanol vehicle fuel programme, the largest of its kind in the world.
http://en.wikipedia.org/wiki/Ethanol_fuel_in_Brazil

Wildwings
This British travel agent offers a comprehensive selection of eco-tours, birdwatching holidays, expedition cruises, whale and dolphin watching tours and deep sea expeditions all over the world.
http://www.wildwings.co.uk/

World Resource Institute
An excellent index of all things ecological from an organization that has been battling to protect the planet's resources for over 20 years.
http://www.wri.org/topicndx.html

World Tourism Organization
Help lessen the negative impact of tourism by following the guidelines set out in the WTO's Global Code of Ethics for Tourism (GCET).
http://www.world-tourism.org/code_ethics/eng/global.htm

World Wildlife Fund
Helping to protect endangered species worldwide.
http://www.wwf.org/
http://www.worldwildlife.org/

World Wildlife Fund
The WWF's Membership Travel Program takes you to the far reaches of the globe to see spectacular wildlife in their natural setting.
http://www.worldwildlife.org/travel/
http://www.wwf.org/

WorldSurface.com
Sustainable tourism and eco-tourism links.
http://www.worldsurface.com/browse/static.asp?staticpageid=1084

Yahoo! Green
Climate change resource.
http://green.yahoo.com/

YouThink
A youth site put together by the World Bank that aims to give an overview of important global issues such as Aids, corruption, the environment, gender, globalization, trade and health.
http://youthink.worldbank.org/