Here's an interesting video that might blow your mindddd. Well I thought it was pretty cool 
http://www.newscientist.com/blogs/culturelab/2010/07/the-evolution-of-life-on-a-wall.html

http://www.newscientist.com/blogs/culturelab/2010/07/the-evolution-of-life-on-a-wall.html









awesome.






