Hot water can freeze faster than cold water.
181
The average home creates more pollution than does the average car.
33
One third of the electricity produced on earth is used to power electric light bulbs!
75
One 75-watt bulb gives more light than three 25-watt bulbs.
57
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
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Iron weighs more after it rusts.
68
If the chemical sodium is dropped into water it will immediately and violently explode.
67