Tigers can see 6 times better at night than humans.
305
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
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
-137
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
Babies crawl an average of 200m a day.
212
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161