If you were to lay out all the blood vessels in the human body end to end, they would stretch over 60,000 miles. That's enough to circle the Earth more than twice!
Sharks don't have bones. They are a special type of fish known as "elasmobranchs", which translates into fish made of cartilaginous tissues. Even though sharks don't have bones, they still can fossilize. As most sharks age, they deposit calcium salts
In northers European cultures, swords were believed to have their own 'soul', so when the warrior died, the sword had to be destroyed and buried so the spirit could accompany the warrior into the afterlife
An "android" (andro - man; eide - looks like) is a robot built to look like a human, while a "cyborg" (cybernetic organism) is a living thing with mechanical parts
A War Was Fought Over a Bucket
Fact: The War of the Oaken Bucket (1325) was between the Italian city-states of Modena and Bologna. It started when Modena stole a wooden bucket from Bologna!
Skin is the body’s largest organ, making up about 16% of your body weight—and it’s constantly renewing itself. You shed nearly a million skin cells every day.
In Japanese mythology, Oni can mean a variety of things like demon, troll, orc or ogre. Children play "oni gokko", which is the same as Tag, but who is "it" is called "the oni"