I recently found out about Carbon Fund and thought I'd share them with everyone! Carbon Fund is a non-profit working toward a zero carbon world through practices like carbon offsets and reductions and climate change education. They assist businesses and individuals to easily (and affordably) make the switch to more sustainable validated third-party renewable energy. They also help with reforestation efforts and are completely transparent with their finances and projects.
They've got some AMAZING info up on their site that's pretty eye-opening. They provide all sorts of suggestions on how to reduce and offset your carbon usage - with tips like buying local and stopping junk mail, it's super easy to make some changes that will have a big impact on your carbon footprint.
Check 'em out, donate to their amazing efforts, and find out how to take the steps toward a zero carbon world!