Scientists aren't sure what color dinosaurs were.
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4.5 pounds of sunlight strike the Earth each day.
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The left ear is more responsive to words of love and emotion whispered into it than the right.
40
The sun is 330,330 times larger than the earth.
75
Hot water can freeze faster than cold water.
181
A cesium atom in an atomic clock beats over nine billion times a second.
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Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
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