Carbon offsets?
"A carbon offset is a service that reduces the net greenhouse gas ("carbon") emissions of a party, by reducing the greenhouse gas emissions—or increasing the carbon dioxide absorption—of another party. The intended goal of carbon offsets is to combat global warming.
A wide variety of offset actions are available and possible: tree planting is the most frequent, followed by various renewable energy and energy conservation projects, sometimes certified as CDM credits, and sometimes in the form of allowances purchased and retired from the carbon emission trading schemes such as the EU ETS."
How to go Carbon neutral:
http://www.davidsuzuki.org/Climate_C...tral_steps.asp