You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19
In Tokyo, a bicycle is faster than a car for most trips of less than 50 minutes!
58
Ice isn't slippery. What makes people and things slip on ice is water. A thin layer of ice melts when pressure is applied to it and it is this wet layer on top of the ice that is slippery.
153
Blue eyes are the most sensitive to light, dark brown the least sensitive.
105
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
