A ball of glass will bounce higher than a ball made of rubber.
73
Nylon is made from coal and petroleum.
42
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
The average home creates more pollution than does the average car.
33
Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
41
Sound travels about 4 times faster in water than in air.
408
Diamonds can be shattered with a hammer.
-104