One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
In zero gravity, a candle's flame is round and blue.
16
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Out of all the senses, smell is most closely linked to memory.
146
Aluminum used to be more valuable than gold!
84
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Sound travels fifteen times faster through steel than through air.
134
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