Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Our brains have a negativity bias and will remember bad memories more than good ones.
15
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
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
-137
It takes approximately 12 hours for food to entirely digest.
93
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