After reading Karen’s Chalktalk and her description of  Thirteen EdOnline, I discovered a site called Science Updates Podcasts, which feature a plethora of fascinating information on current science topics. Podcast are presented daily or weekly. It is also possible to access archived podcasts or transcripts. Unfortunately, textbooks are often outdated, this is a great way to enhance your existing curriculum. Did you know that seeds can crawl? Check it out: http://www.scienceupdate.com/show.php?date=20070613