The average temperature at 40,000 feet above sea level is -60 F.
56
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
The bark of an older redwood tree is fireproof.
65
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Most dust particles in your house are made from dead skin!
67
According to scientists, the color of the cup that we're drinking from can alter our perception of the actual taste of the drink.
12
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Hot water can freeze faster than cold water.
181