Early American humans hunted car-size armadillos and used their shells for houses.
12
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
We share 70% of our DNA with a slug.
218
Our Right Lungs takes more air than our left lung.
194
The human brain has the capacity to store everything that you experience.
4k
The average sperm cell swims at 8 inches per hour.
4
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
You can't tickle yourself.
29