Clyde Lewis investigates why the number of earthquakes has dramatically increased during recent years.
podcast 1 hour
http://www.groundzeromedia.org/gzpod/index.php?p=episode&name=2012-03-28_gzlive_032312.mp3
podcast 1 hour
http://www.groundzeromedia.org/gzpod/index.php?p=episode&name=2012-03-28_gzlive_032312.mp3