An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
We share 70% of our DNA with a slug.
218
Your thumb is about the same size as your nose.
124
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
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252