Most of you probably know I'm a biology (zoology) major graduating in the spring. I hate hate HATE biochemistry! However, we watched this video today in class, and I thought it was one of the most beautiful things I have seen in a while.
Don't be discouraged by the title. It's a computer animated video with some dramatic music accompaniment. If you watch it and decide you want to know what it actually is that you are watching then click the second link, which is a narrated version of the same video.
Narrated version: http://www.youtube.com/watch?v=MMrvmZ2i1sE