Blue eyes are the most sensitive to light, dark brown the least sensitive.
105
When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.
423
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
The average IQ is 100, while 140 is the beginning of genius IQ.
140
There are more telephones than people in Washington, D.C.
121
A Swiss man replaced his car's broken heater with a fully functional wood burning stove.
15
There are 2,500,000 rivets in the Eiffel Tower.
98