Consumer’s Guide to Retail Carbon Offset Providers (PDF). To Summarize:
- Buying an offset does not solve the problem if you continue your lifestyle. You can’t buy an indulgence.
- Different carbon offset companies have different ways of measuring and different ways of offsetting carbon. (See this article by Andrew Revkin).
Wow, it looks like a consumer-guide is a secured read-only document, meaning you can’t copy excerpts of it into a weblog post like this. Way to go!
Update: Matt alerts me to a good information/rating site about carbon offsets. Thanks, Matt!