A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
The human brain doesn't stop developing until about 25 years old.
102
Only humans shed emotional tears.
331
Your heart will pump about 212 million liters in its lifetime.
26
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
It is possible for you to survive even after the removal of the spleen, the stomach, one kidney, one lung, 75% of the liver, 80% of the intestines, and almost every organ from the pelvic and groin area.
218