The Evolution of Life on Earth...

[http://youtu.be/H2_6cqa2cP4] (YouTube link)The Earth is estimated to be about 4.5 billion years old. It's hard to grasp such a amount of time, so AsapSCIENCE took those billions of years and compressed it into a theoret...

http://www.neatorama.com/2012/11/29/The-Evolution-of-Life-on-Earth/