Yawns are more contagious among people with closer relationships.
163
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
Your thumb is about the same size as your nose.
124
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
The average sperm cell swims at 8 inches per hour.
4
Our brains have a negativity bias and will remember bad memories more than good ones.
15
There are about 255 babies born worldwide every minute.
46
It takes approximately 12 hours for food to entirely digest.
93