Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
A cesium atom in an atomic clock beats over nine billion times a second.
43
Cold water weighs more than hot water.
93
Iron weighs more after it rusts.
68
Most dust particles in your house come from dead skin.
48
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
