Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
The sun is 330,330 times larger than the earth.
75
Pumice is the only rock that floats on water.
14
Sound at the right vibration can bore holes through a solid object.
134
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
The inventor of the Super Soaker squirt gun was a NASA Scientist who also helped develop the Stealth Bomber and the Galileo mission to Jupiter.
7
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75