I recently had a chance to listen to a podcast of Jon Isham and Andy Rossmeissl, two of the three founders of Brighter Planet, a FreshTracks I portfolio company. The podcast is a recording of Jon and Andy on a conference call with a handful of bloggers, and is an extended Q&A focused on the background on carbon offsets and Brighter Planet's role in the carbon offset market. If you have 45 minutes to take a listen I heartily recommend it: Brighter Planet Blog: The Growl.