The average salinity of the world's oceans is 34.7 parts per thousand.
The thirteenth of the month falls on Friday more often than on any other day of the week. In a 400-year period, there will be 688 Friday the thirteenths, as compared to 687 Sundays or Wednesdays, the next highest number.
The average-size hot tub or spa – about 4 by 5 feet – holds about 475 gallons of water.
The U.S. Library of Congress has compiled a 232-source bibliography on the subject of when, properly speaking, centuries roll over. Almost all of the sources agree that the twentieth century will not end until December 31, 2000.
The best-selling book of all time is the Bible. Throughout the world, the Bible has sold over 6 billion copies, enough to give every person in the world one copy.
The budget of the U.S. Department of Health, Education and Welfare – $200 billion – is larger than the combined operating expenses of all the governments of the 50 U.S. states combined.
The U.S. standard railroad gauge (distance between rails) is 4 feet, 8.5 inches.
The United States earned the title of having the most automobiles of any country in the world. With an estimated 135 million cars nation wide, it is approximated that there is one car for every two Americans.
The Bureau of Engraving produces $4,095 in paper currency each minute.
The United States has the rest of the world beat when it comes to its toilets. Per a survey of 100 international travel writers, the United States has, by far, the best in the world. Western Europe may have the best castles and museums, but johns finished a distant second. Scandinavia, rated separately from Western Europe, placed third. China's bathrooms are considered the absolute worst according to the surveyed travel writers. Almost as bad are those toilets in the Middle East and the former Soviet Union. The Soviet Union was also voted the worst when it comes to toilet paper.
The Canadian province of Nova Scotia leads the world in exporting lobster, wild blueberries, and Christmas trees.
The United States produces 19 percent of the world's trash. The annual contribution includes 20 billion disposable diapers, 2 billion razors, and 1.7 billion pens.
The Capitol Building in Washington D.C., has 365 steps. They represent every day of the year.
The United States produces the world's largest crop of soybeans. China is the second largest producer.
The Capitol Records building in Los Angeles, California, is built to resemble a stack of records. A red airplane-warning light atop the structure flashes out the word "Hollywood" in Morse code every 20 seconds or so.
The United States shreds 7,000 tons of worn-out currency each year.
The cargo bay of a space shuttle is large enough to hold one humpback whale, and still have room for 1,000 herrings. That's the equivalent of filling it with 250,000 4 oz. candy bars.
The world's biggest ice cream bar was made in Kalisz, Poland. In September of 1994, it took 11 days to make the bar which weighed 19,357 pounds when it was finished.
The Caspian Sea, bordered by Russia and Iran, is the world's largest lake with a surface area of 142,145 square miles (371,000 square kilometers). Containing salt water, it is believed the Caspian Sea may be the remains of a former sea.
The world's fastest gust of wind was clocked at 231 miles per hour at the peak of New Hampshire's Mount Washington. The fifth fastest wind in the world was recorded in Buffalo, New York, at 91 miles per hour.
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