Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
We share 70% of our DNA with a slug.
218
Tigers can see 6 times better at night than humans.
305
Gorillas can catch human colds and other illnesses.
205
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
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
The human brain uses approximately as much energy as a 10 watt light bulb.
120