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 being loses an average of 40 to 100 strands of hair a day.
133
You can't tickle yourself.
29
We share 70% of our DNA with a slug.
218
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Your fingernails grow faster in summer.
744