Bioscience:The Story of Us（1）
The world of the 21st century built by planet earth's most successful species ever — the human race. We are amazing， and not just for what we've done， but for what we are. Through four billion years of revolution， our body has emerged as unique collection of parts. Here is what you are made of: 100 trillion cells， 640 muscles， 200 bones， a heart that beats 2.5 bilion times over a lifetime， a skeleton that regenerates itself five times， and a brain capable of making 1，000 billion different connections.
- Added：2006
- Country：America
- Duration：60
- Time of update：2011/8/18 16:55:45