As part of the National Science Teachers Association (NSTA) web seminar series on IPY, a free web seminar will be held June 5th from 6:30 to 8:00 PM Eastern Time. Entitled "The Fragile Ice" and presented by Mark McCaffrey from the University of Colorado in Boulder who is a member of the IPY Education, Outreach and Communications subcommittee, this web seminar is geared for teachers interested in learning more about the 125 year legacy of IPY and current IPY activities that they can use in classroom settings. The seminar will be interactive and archived for later viewing, and those interested in participating will need to register. As the title suggests, the seminar will focus on changes observed in polar ice dynamics and the global implications.