This report, published in December 2006, provides detailed information about carbon offsets and finds eight "Tier 1" organizations that satisfy a number of criteria to increase the probability that the carbon offsets purchased will have a real effect reducing carbon emissions. These eight organizations (in alphabetical order) are:
- AgCert/DrivingGreen (Ireland) www.drivinggreen.com
- atmosfair (Germany) www.atmosfair.de
- Carbon Neutral Co. (England) www.carbonneutral.com
- Climate Care (England) www.climatecare.org
- Climate Trust (U.S.) www.climatetrust.org
- co2balance (England) www.co2balance.com
- Native Energy (U.S.) www.nativeenergy.com
- Sustainable Travel Int'l (U.S.) www.sustainabletravelinternational.org
The report is careful to emphasize, however, that individual's efforts to reduce one's carbon emissions through lifestyle and consuming choices are most important.