So not only is this incredibly cool to watch, but it illustrates how the lenght of the day and weather changes throughout the year. I could see this type of project being replicated for various biomes and used in student materials. Brilliant idea!<p>Also, it was nice to learn about MobyGratis.com. I've always like Moby's music, but the fact that he makes his music available like this for non-commercial use is just awesome.