Space Junk Explained

With the recent near miss, within a mile, of the International Space Station (ISS) by a large piece of space junk I decided to do a little searching regarding how much junk is out there and how dangerous it is to orbiting craft. The Science Channel produced a short video of the subject that does a good job of explaining. Check it out here: http://science.discovery.com/videos/spaced-out-space-junk.html