The Phoenix PBS affiliate, KAET-TV, Channel 8, devoted half of last Wednesday night's edition of the "Horizon" program to earth fissures in Arizona. It can viewed in Windows Media Viewer or Quicktime, or listened to as a podcast at http://www.azpbs.org/horizon/watch.asp. Scroll down to May 30 and click on the earth fissures link.
[right: earth fissure in Chandler Heights area, southeast of Phoenix, August 2005]