On May 1, iReport released a list of the 10 greenest cities in the U.S. and Austin was #1. Austin has a new Climate Protection Plan where all city facilities, fleets and operations will be powered by renewable energy by 2012 and carbon neutral by 2020. Berkeley was number 2 followed by Boston, Chicago, Minneapolis, New York, Philadelphia, Portland, San Francisco, and Seattle.
Here is a link to the full report on all the cities in the list: http://www.ireport.com/docs/DOC-17495
Here is a link to the Austin Climate Protection Plan which details Austin's plans to reduce greenhouse gases: http://www.ci.austin.tx.us/council/mw_acpp_release.htm