National Geographic magazine, long known for its educational maps and writing that is easily understood by a variety of readers, has added a feature to its Website. The new online resource from National Geographic, sponsored by the National Imagery and Mapping Agency (NIMA), is called Eye in the Sky, and it showcases what we can learn about our planet using satellites. Here, users can read about the history of satellites and remote-sensing technology and choose from a menu of brief lessons on natural disasters, human impacts on Earth, human conflicts, and exploration of Mars. Each lesson page gives photographs, facts, and short movies (RealPlayer or Windows Media Player). The title "Eye in the Sky" is slightly misleading because most of the images featured are taken at ground-level, and it isn't always clear how some of the lessons fit with the idea of remote sensing. Nevertheless, the site is worth a look, and a few satellite images (of floodplains and the ozone hole, for example) pepper the material here.
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