A cesium atom in an atomic clock beats over nine billion times a second.
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Iron weighs more after it rusts.
16
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
Pumice is the only rock that floats on water.
14
The smell of freshly cut grass is actually a plant distress call.
31
Research indicates that plants grow healthier when they are stroked.
173
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51