• Every drop of seawater contains approximately 1 billion gold atoms

Every drop of seawater contains approximately 1 billion gold atoms. Learn odd facts and interesting facts on FactPark.com.

• The sun shrinks five feet every hour

The sun shrinks five feet every hour. Share random, interesting, fun, odd, and amusing facts on FactPark.com.

• Word spelled without repeating a letter

Uncopyrightable is the only 15-letter word that can be spelled without repeating a letter. Share and learn interesting and fun facts on FactPark.com

• Sharks have the most powerful jaws on the planet

Sharks have the most powerful jaws on the planet. Both the sharks' upper and lower jaws move.

• Where did the name Jeep come from?

The name Jeep came from the military abbreviation GP, stands for the army's General Purpose Vehicle.

• Country with the longest coastline

Norway is 27 times smaller than the United States, but it has longer coastline than the U.S.

• The world's deepest gold mine

The world's deepest gold mine is seven kilometers below the surface of the Earth.

• The ostrich's brain is smaller than its eye.

The ostrich's brain is smaller than its eye. Fact.

• Poisoned by polar bear liver

If humans eat a polar bear liver, they will die of vitamin A poisoning. T he polar bear ingests large amounts of vitamin A, which is stored in its liver. In the past, humans have been poisoned by eating the livers of polar bears.

• The world's oldest animal

The oldest animal on Earth was born in 1830 Her name is Harriet, she's a Galapagos land tortoise

• Galapagos tortoises

Galapagos tortoises may reach a length of over 4 ft and weigh over 500 lb.

• What is the difference between sweet potatoes and yams?

Although yams and sweet potatoes are both angiosperms (flowering plants), they are not related botanically. Yams are a monocot (a plant having one embryonic seed leaf) and from the Dioscoreaceae or Yam family. Sweet Potatoes, often called ‘yams’, are a dicot (a plant having two embryonic seed leaves) and are from the Convolvulacea or morning glory family.

• How did the grapefruit get its name?

How did the grapefruit get its name? It doesn't look like a grape. It is believed that the name refers to the manner in which grapefruit grows in clusters on a tree.

• Why does chopping an onion make you cry?

Unstable chemicals. Onions produce the chemical irritant known as syn-propanethial-S-oxide. It stimulates the eyes' lachrymal glands so they release tears.

• Pepper is known as the king of spices

Known as the "king of spices" because it is one of the oldest and most popular spices in the world.

• The average American drinks about 600 sodas a year

The average American drinks about 600 sodas a year.

• Americans eat one hundred pounds of chocolate every second

Every second, Americans eat one hundred pounds of chocolate.

• Which is the largest bear on earth?

The polar bear is generally considered the largest bear on Earth. A close second is the brown bear, specifically the Kodiak bear. The Kodiak is a subspecies of the brown bear native to Alaska.

• How long is the life span of a flea?

A flea might live a year and a half under ideal conditions. These include the right temperature, food supply, and humidity. Generally speaking, though, an adult flea only lives for 2 or 3 months.

• Can zebras be domesticated?

Zebras' unpredictable nature and tendency to attack preclude them from being good candidates for domestication.

• What are the northern lights?

The northern lights, one of several astronomical phenomena called polar lights (aurora polaris), are shafts or curtains of colored light visible on occasion in the night sky.

• Aurora Borealis - northern dawn

The name "Aurora Borealis" is credited to Galileo Galilei (1616) and means "northern dawn". Auroras have been observed since ancient times.

• The height of the nothern lights can occur up to 620 miles

The height of the displays can occur up to 1000 km (620 miles), although most are between 80-120 km.

• Auroras tend to be more frequent and spectacular during high solar sunspot activity

Auroras tend to be more frequent and spectacular during high solar sunspot activity, which cycles over approximately eleven years.

• Why don’t you fall out when a roller coaster goes upside down?

Gravity is counteracted by the force of acceleration, which is the force that pushes you forward.

• The roller coaster is traced to Russia in the 15th century

The “ancestor” of the roller coaster is traced to Russia in the 15th century

• The first Roller Coaster

One of the first roller coasters was in France in 1817 - Les Montagnes Russes à Belleville (Russian Mountains of Belleville) - the train axle was attached to the track by way of a carved groove.

• The longest roller coaster

The longest roller coaster at this time is Steel Dragon 2000, Nagashima Spa Land, Japan, at 8,133 feet/2,479 m.

• The tallest steel continuous circuit roller roaster

As of 2005, the tallest steel continuous circuit roller roaster is Kingda Ka at Six Flags Great Adventure, Jackson Township, NJ, 139m/456 feet. It is also the fastest at 128 mph/206 km/h. A ride lasts 50.6 seconds.

• Skywriting and skytyping

Skywriting is done by one plane that can generally write up to six characters, with a skilled pilot at times maneuvering upside down as they decide when smoke is needed for the letters.

• The development of skywriting

Most sources attribute the development of skywriting (1922) to John C. Savage, an Englishman. In that year, Captain Cyril Turner wrote "Daily Mail" over England and "Hello USA" over New York. The American Tobacco Co. then picked up the technique for their Lucky Strike cigarettes.

• First skywriting for advertising was in 1922

The first skywriting for advertising was in 1922 by John C. Savage, an Englishman.

• Method of producing advertising signs of smoke in the air

April 8, 1924, Savage received a patent for “Method of producing advertising signs of smoke in the air” (US Patent 1,489,717).

• A skywriting letter takes 60-90 seconds to create

A skywriting letter can be as high as one mile and take 60-90 seconds to create.

• The best conditions for skywriting

The best conditions for skywriting are few clouds, little or no wind, and cooler temperatures. Then the letters may be seen for 30 miles in any direction and can last 20 minutes.

• Skywriting occurs usually at altitudes from 7,000-17,000 ft

Skywriting occurs usually at altitudes from 7,000-17,000 ft.

• The paraffin oil vaporizes at 1500 degrees

The paraffin oil used in skywriting vaporizes at 1500° in the heat of the plane's exhaust and is environmentally safe.

• The skywriting appeared in the movie Wizard of Oz

The skywriting that appeared in the movie, "Wizard of Oz" was done by special effects in a tank with an oil and water mixture.

• What causes the noise when you crack a joint?

Your joints can make a variety of sounds: popping, cracking, grinding, and snapping. The joints that "crack" are the knuckles, knees, ankles, back, and neck. There are different reasons why these joints "sound off".

• Why do fingers and toes wrinkle in the bathtub?

The outermost layer of the skin swells when it absorbs water. It is tightly attached to the skin underneath, so it compensates for the increased area by wrinkling.

• Why does hair turn gray?

It is well known that gray hair results from a reduction of pigment, while white hair has no pigment, but why this happens remains somewhat of a mystery.

• Why does our hair turn gray or white?

The hair follicle has a melanogentic clock which slows down or stops melanocyte activity, thus decreasing the pigment our hair receives. This occurs just before the hair is preparing to fall out or shed, so the roots always look pale.

• An average scalp has 100,000-150,000 hairs

An average scalp has 100,000-150,000 hairs. Some people might have more than others.

• An average head of hair could hold 10-15 tons

Hair is so strong that each hair can withstand the strain of 100 grams (3.5 ounces). An average head of hair could hold 10-15 tons if only the scalp was strong enough!

• Human hair grows autonomously

Human hair grows autonomously, that is each hair is on its own individual cycle. If all our hair were on the same cycle, we would molt!

• An average hair grows 0.3 mm a day and 1 cm per month

Hair has the highest rate of mitosis (cell division). An average hair grows 0.3 mm a day and 1 cm per month.

• Every day the average person loses 60-100 strands of hair

Every day the average person loses 60-100 strands of hair. However, hair loss will vary in accordance with the season, pregnancy, illness, diet and age.

• Seashell roar in the ear

The roar that we hear when we place a seashell next to our ear is not the ocean, but rather the sound of blood surging through the veins in the ear.

• No blood supply in the cornea

The only part of the body that has no blood supply is the cornea in the eye. It takes in oxygen directly from the air.

• The meaning of the horse legs of a statue

If a statue in the park of a person on a horse has both front legs in the air, the person died in battle.

• Biggest animal in the world

The blue whale is the largest animal in the world. The largest blue whale caught was a 110-foot female.

• A person walks 5 times around the equator

In the average lifetime, a person will walk the equivalent of 5 times around the equator.

• Cats sleep 16 to 18 hours per day

Random fact about cats: they sleep 16 to 18 hours per day.

• Land of Giants - Holland

The Dutch men and women are considered the tallest.

• Traffic Jams in Holland

Holland is a relatively populated country with lots of traffic jams.

• Late marriages - Holland

Cold feet - The Dutch marry late in their lives with average 32.7 for women and 35.8 for men.