Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Tigers can see 6 times better at night than humans.
305
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
The human eye blinks an average of 4,200,000 times a year.
233
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
We share 70% of our DNA with a slug.
218
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
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82