Moist air holds heat better than dry, which is why nights in the desert are cool while nights in the humid tropics are torrid.
The walls of an igloo, made entirely of natural material — stand up better to modern artillery than a concrete barricade, according to tests conducted by a Swedish army. The walls absorb an artillery blast, are almost invisible from the air, and can't be spotted by the infrared sensors that guide today's missiles.
The average rainfall around the world is 40 inches per year.
The average rainfall around the world is 40 inches per year.More than 25 percent of the world's forests are in Siberia.
The West Wind Drift, one of the main ocean currents in the southern hemisphere, carries 2,000 times more water than the Amazon River. It flows more than twice as fast as a person can swim.
The average speed of an avalanche is 22 miles per hour.
More than 6,000 wrecked ships lay at the bottom of the Great Lakes. One of the better known is The Edmund Fitzgerald. The ship sank on November 10, 1975 during a severe storm on Lake Superior
The winds inside cumulonimbus clouds may reach a speed of 124 miles per hour, as fast as many express trains.
The banana and the Bird-of-Paradise flower are in the same family.
More than 71 million gallons of water pass over Victoria Falls in Africa every minute.
The word "hurricane" is derived from the name of the West Indian god of storms, Huracan.
The banana cannot reproduce itself. It can be propagated only by the hand of man.
More than 75 million people are estimated to have been killed by earthquakes in the history of our planet.
The baobab tree of Australia has a short, fat trunk that develops into a shape that is an almost perfect replica of a bottle. It is known throughout Australia as the "bottle tree."
Most dangerous of all avalanches, snow avalanches occur about a million times a year.
Most gemstones contain several elements. Except the diamond — it's all carbon
Forty-six percent of the world's water is in the Pacific Ocean. The Atlantic has 23.9 percent; the Indian, 20.3; the Arctic, 3.7 percent
From 70 to 80 percent of all ripe olives are grown in California's approximately 35,000 acres. In the 1700's, Franciscan monks brought olives to Mexico and then into California by way of the missions. The first cuttings were planted in 1769 at the San Diego Mission. Commercial cultivation of California olives began in the late 1800s. Today, anywhere from 80,000 to 160,000 tons of olives are produced in California each year.
Gardenias and orange blossoms both smell terrific, but when placed together in the same bouquet, they will neutralize each other's odor and there will be no smell at all.
The world's largest silver nugget, weighing 1,840 pounds, was found in 1894 near Aspen, Colorado.
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