Most human activity creates carbon dioxide and greenhouse gases.

Greenhouse calculators enable individuals, restaurants, cafes, clubs and hotels to determine the exact amount of carbon dioxide produced by their vehicles, air travel and business use.

Trees can then be planted to offset these greenhouse emissions.

Check the information from these fine organisations:

Conservation.org (USA) says humans may be the cause of the Earth's rising temperature, but we can also be the solution. Your offset dollars will help protect the roughly 832,000-acre Makira Forest in northeast Madagascar and prevent millions of tons of CO2 from entering the atmosphere.

Greenfleet (Australia) has planted of over two million native trees on behalf of motorists to sequester carbon emissions. This has created new forests in areas of environmental concern and will provide long-term benefits such as improved water quality, lowering of the water table thus reducing salinity, and providing ongoing habitat for local flora and fauna.

Their Tree Totaller greenhouse calculator works out the greenhouse gas emissions produced by your particular car, home/office energy use or air travel.

Profitable Hospitality has used this calculator to work out the carbon offset needed for the 2007 Tour to Chicago & Las Vegas and will be donating an amount sufficient to plant 16 trees for each traveller.

CarbonFootprint (UK) explains and measures the impact human activities have on the environment in terms of the amount of green house gases produced, measured in units of carbon dioxide. Includes calculators and suggestions.

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