It's Too Interesting to be Missed: 7 Billion People

I was rambling through the Internet and found this very-very interesting video, from National Geographic,  about Earth's population.  You should watch this:




If you can't watch it here, go to this link: http://www.youtube.com/watch?v=sc4HxPxNrZ0

I wonder how many pets there are in the world.

Ola kala!