By weight, Bone is five times stronger than steel.
417
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
Sony researchers have developed a refrigerator that only opens when you smile.
9
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Nachos were actually invented by a guy named Nacho. Happy Nacho Day!
13
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6