A cubic yard of air weighs about 2 pounds at sea level.
31
A ball of glass will bounce higher than a ball made of rubber.
73
Cold water weighs more than hot water.
93
Hot water can freeze faster than cold water.
181
Research indicates that plants grow healthier when they are stroked.
173
Billions of neutrinos pass unnoticed through your body every second.
6
Diamonds can be shattered with a hammer.
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