Early American humans hunted car-size armadillos and used their shells for houses.
12
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
Yawns are more contagious among people with closer relationships.
163
If your DNA was stretched out it would reach to the moon 6,000 times.
256
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
Your thumb is about the same size as your nose.
124
Mushrooms are more closely related to humans than they are to plants.
47
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127