Hi Marti, I was wondering what the talk is about the 7 km iceberg that broke off the Jakobshavn Isbrae Glacier in Greenland. I saw that you are going to be teaching in Tucson in the Fall! I also teach middle school science in Tucson, so please call me when you get to town! Enjoy Greenland and I'll look forward to your posts. Betsy Wilkening Wilson K-8 School Tucson, AZ