It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
There's an isolated tribe in Zimbabwe where the people have only two toes, dubbed the 'ostrich people'.
10
You can only remember 4 things at a time.
31
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
90% of people sit at their computer desk slouching, supporting their head with their left hand.
41
44% of kids watch television before they go to sleep.
106