The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
More than 10% of the world's salt is used to de-ice American roads.
54
Dartboards are made out of horsehairs.
129
There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
22
Any domino can knock over another object up to 1.5x its size. The 32nd object would be big enough to knock over the Empire State Building.
18
The average American uses eight times as much fuel energy as an average person anywhere else in the world.
28
Not swinging your arms when you walk increases the effort of walking by 12%, the equivalent of walking 20% faster or carrying a 10 kg backpack.
12