Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Obsessive nose picking is called Rhinotillexomania.
101
The average sperm cell swims at 8 inches per hour.
4
Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
34
Only humans shed emotional tears.
331
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