Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
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4.5 pounds of sunlight strike the Earth each day.
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A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
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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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Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
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The average temperature at 40,000 feet above sea level is -60 F.
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One 75-watt bulb gives more light than three 25-watt bulbs.
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At room temperature, the average air molecule travels at the speed of a rifle bullet.
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