Energy experts say that ceiling fans consume as little energy as a 60-watt bulb, which is about 98 percent less energy than most central air conditioners use.
Eskimos use refrigerators to keep food from freezing.
Evergreens, because of their long life span and their needles' year-round exposure to pollution, are the most vulnerable trees to air pollution..
Every day, 8.5 million tons of water evaporates from the Dead Sea, on the border between Israel and Jordan.
Every living thing on the earth contains carbon.
The shamrock, at one time called the "seamroy," symbolizes the cross and blessed trinity. Before the Christian era, it was a sacred plant of the Druids of Ireland because its leaves formed a triad. The well known legend of the shamrock connects it to St. Patrick and his teachings. While preaching outdoors, he is said to have illustrated the existence of the holy trinity or "Three in One" by plucking a shamrock from the grass growing at his feet and showing it to his congregation. The shamrock's legend is also connected with that of the banishment of the serpent tribe from Ireland by a tradition that snakes are never seen on a trefoil and that it is a remedy against the stings of snakes and scorpions.
The softest mineral known is talc.
Species of coffee trees can grow as tall as 32 feet and their leaves can range in color from purple to yellow. Green is the predominant color, however.
The sound of thunder travels about 1,100 feet per second.
Supercells are similar to other thunderstorms, except they're bigger, stronger, and meaner. While a strong thunderstorm, associated with a passing cold front, may produce a tornado, supercells can produce several tornadoes. One of the things that separates supercells from the "ordinary" thunderstorms is that violent updrafts and downdrafts reinforce each other, which allows a supercell to be sustained for an hour or more.
Life preservers and the lining of aviators' jackets used during World War II were made from fiber found in milkweed pods.
The speed of a raindrop varies with drop size and wind speed. A typical raindrop falls an average of 600 feet per minute, or 7 miles per hour.
The speed of a raindrop varies with drop size and wind speed. A typical raindrop falls an average of 600 feet per minute, or 7 miles per hour.
Swimming pools in the U.S. contain enough water to cover the city of San Francisco with a layer of water about 7 feet deep.
Lightning bolt charges can propagate for up to 100 miles; however, the actual channel of lightning is rarely larger than the width of a pen.
The state of Michigan claims more varieties of trees than all of Europe, which are spread over 19 million forested acres — more than half the state.
Tap, fibrous, fleshy, and tuberous are types of plant roots.
Lightning bolts generate temperatures five times hotter than the 6,000 degrees Centigrade found at the surface of the sun.
The state of Texas reportedly grows more roses than any foreign country.
Temperate climates are the most popular. Even though only 7 percent of the world enjoys a temperate climate, nearly half of the world's people live in these areas.
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