Episode 4 of the EarthTrends Podcast--a collaboration between World Resources Institute, StopGlobalWarming.org, and the Bonnaroo Music and Arts Festival--is now available.

Listen to Episode 4 of the EarthTrends Podcast.

Episode 4 features an interview with WRI's Liz Marshall about the current debate over foreign sources of energy for transportation in America and one energy alternative to gasoline - ethanol. Two live performances from the Disco Biscuits are also featured on this podcast.

Visit the EarthTrends Podcast webpage for more information and to subscribe to the EarthTrends podcast.

All EarthTrends podcast episodes can be downloaded or listened to online at http://earthtrends.podshow.com/.

As always, we welcome your feedback and suggestions for future podcast content.

RELATED LINKS:

EarthTrends Podcast Episode 3 posting

EarthTrends Podcast Episode 2 posting

EarthTrends Podcast Episode 1 posting

What is a podcast? (wikipedia article)

Get iTunes software and read Apple's guide to podcasting at http://www.apple.com/itunes/podcasts/.

See Yahoo's podcast directory at http://podcasts.yahoo.com/.

Simple podcasting help can be found at http://www.rfa.org/english/support/podcast_help/.