An interesting Google Earth network link for tracking an expedition has been posted for Project Thin Ice, by Greenpeace. The project is drawing attention to the danger to polar bears due to the melting of artic ice. The web site includes a blog, videos, photos, maps, and now a Google Earth file for tracking the expedition. The GE file was done by Tim Harincar who also does Sailblogs.com I wrote about earlier. There is an image overlay of the estimated ice concentration added over the satellite photos of the area. I like the way the placemark descriptions provide a brief snippet of a blog entry with a link to the actual blog entry at the web site. Also, I like the way he has used the colored bubble descriptions to add the “green” for Greenpeace. (Read here for a story on how to make colored bubbles). Great work Tim!