Aluminum used to be more valuable than gold!
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Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
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It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
At room temperature, the average air molecule travels at the speed of a rifle bullet.
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In zero gravity, a candle's flame is round and blue.
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Scientists in Germany have developed a candy that doesn't cause cavities.
11
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
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One gallon of used motor oil can ruin approximately one million gallons of fresh water!
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