The human brain has the capacity to store everything that you experience.
4k
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Early American humans hunted car-size armadillos and used their shells for houses.
12
Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21
Only humans shed emotional tears.
331
You forget 90% of your dreams.
256