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
You forget 90% of your dreams.
256
Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
35
Your thumb is about the same size as your nose.
124
There are about 255 babies born worldwide every minute.
46
Our brains have a negativity bias and will remember bad memories more than good ones.
15
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161