Your spit has a painkiller 6 times stronger than morphine. It contains a substance called opiorphin that is stronger than morphine.
39
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
If two pieces of metal touch in space, they become permanently stuck together.
808
Leonardo Da Vinci made a robotic lion in 1515 that would walk, sway, open its mouth and move its tail - it even had a compartment that opened to present flowers.
22
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
The largest earthworm on record was found in South Africa and measured 22 feet.
151
Lack of water is the #1 trigger of daytime fatigue.
148
Your body is creating and killing about 2.4 million red blood cells per second.
17