The average sperm cell swims at 8 inches per hour.
4
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
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
In 1918, after the treaty of Versailles (end of WWI), the French Commander-in-chief said "This is not a peace. It is an Armistice for 20 years." 20 years and 65 days later, WWII happened.
31
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
In Cuba, hitchhiking is encouraged and government vehicles are legally required to pick up hitchhikers.
4
Ming-Na Wen, who portrays The Cavalry on Agents of S.H.I.E.L.D., was also the voice of Mulan. And she’s 50 years old.
7