If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
A human being loses an average of 40 to 100 strands of hair a day.
133
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Obsessive nose picking is called Rhinotillexomania.
101
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
A human brain produces as many as 12,000 to 50,000 thoughts per day, depending on how deep a thinker a person is.
23
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93