Dartboards are made out of horsehairs.
129
There are more than 10 million bricks in the Empire State Building!
75
The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
Diamonds mined in Brazil are harder than those found in Africa.
40
In many countries, urine was used as a detergent for washing.
17
The weight of air in a milk glass is about the same as the weight of one aspirin tablet.
63
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
In Dubai, there’s a fridge magnet that orders a pizza delivered to your door.
12