Research indicates that plants grow healthier when they are stroked.
173
One third of the electricity produced on earth is used to power electric light bulbs!
75
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
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
Sound travels about 4 times faster in water than in air.
408