Early American humans hunted car-size armadillos and used their shells for houses.
12
Our Right Lungs takes more air than our left lung.
194
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
The human brain doesn't stop developing until about 25 years old.
102
A person can live without food for about a month, but only about a week without water.
156
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15