Forty years ago Earth Day was modeled after the "teach ins" that people used to protest the war in Vietnam.    Today it seems more like an overbearing marketing campaign.    In our latest podcast, Earth and Industry's "Gang of Four" - Tim Hurst, Maria Surma Manka, Jeff McIntire-Strasburg, and me, David Wescott - discuss how environmentalists can take Earth Day back from the pitch men.

And it's worth noting that in the less than 15 minutes it took to record this podcast, Jeff got two email pitches from marketing / PR types - and a third as we were wrapping up.   No lie.