A cesium atom in an atomic clock beats over nine billion times a second.
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The left ear is more responsive to words of love and emotion whispered into it than the right.
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Sound travels about 4 times faster in water than in air.
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A cubic yard of air weighs about 2 pounds at sea level.
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Galalith is a type of plastic that can be made from milk. It is odourless, insoluble in water, biodegradable, anti-allergenic, antistatic, and virtually non-flammable.
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Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
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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.
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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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