How Is Sugar Made?

Sugar cane and sugar beets produce most of the sugar we use. Even though these plants grow in different climates, sugar cane in the tropics and sugar beets in temperate zones, once their sugar is refined, there is very little difference between the two. Sugar cane stalks grow from old stalks planted in the ground. … Read more

How Is Tea Made?

The tea plant grows mainly in the Far East, with India leading the world in production. These plants are raised from seeds produced by the white flowers on the plants. They are grown on large farms called tea gardens. When the tea plant is from three to five years old and about three to four … Read more

How Does Welding Hold Things Together?

Welding is a method used to permanently join two pieces of metal. Heat is applied to two of the metal surfaces or edges, usually with a gas torch or an electric welding tool. However, when large surfaces are to be welded, large machines are used. The heat applied by the machines melts the two surfaces … Read more

How Is Unbreakable Glass Made?

Plate glass for automobile windshields has an ingredient added to ordinary glass to make it into safety glass. The glass is built up in separate layers, much like a sandwich. Between each of two layers of flat glass is a filling of plastic material that binds them together in a process called lamination. Even though … Read more

How Is Glass Made?

how is glass made

Before humans learned the secret of glassmaking, nature was the world’s only glassmaker. Lightning striking sand melted it into long, thin tubes of glass, and volcanoes erupting melted rocks and sand into glass. The earliest glass made by humans was probably a glaze on ceramic pottery made somewhere around 3000 B.C. Today, three inexpensive ingredients, … Read more

How Are Raisins Made?

Ever since the ancient Egyptians first discovered that drying grapes preserved them, improved their flavor, and made them sweeter, people have been enjoying raisins. Most raisins today are made from seedless grapes which grow on vines in large grape orchards. Each grape vine, with the proper care, can produce fruit for 100 years. After the … Read more

Which People Wrote on Plants?

The ancient Egyptians used a tall, reed-like water plant from the Nile River as the world’s earliest paper. This plant, called papyrus, has stems from 3 to 10 feet tall. These papyrus stems were cut in long strips and laid side by side. Other strips were placed at right angles on top of them, and … Read more

How Is Vinegar Made?

Vinegar is made by a chemical change called fermentation. During fermentation, the sugar in wine or juice is changed into alcohol and gas. As the gas evaporates, it leaves only the alcohol and fruit flavors. The next step in the fermentation process is called oxidation, when the oxygen in the air mixes with the vinegar … Read more

How Do Bacteria Work To Harm Us and To Help Us?

Bacteria are tiny, one-celled organisms that can be found almost everywhere, in the deepest oceans, in the thickest soil, and up to 90,000 feet in the atmosphere. There are many kinds of bacteria, some which cause deadly diseases and some which are helpful to man. Those which are harmful cause diseases in man, animals, and … Read more

How Is Nylon Made?

Nylon was the first of the synthetic fibers made by man, and is considered one of the most important chemical discoveries because of its toughness, strength, elasticity, and resistance to oil and grease. In the late 1920s and the early 1930s, chemists at the DuPont Company first produced nylon by combining chemicals they extracted from … Read more

How Does a Thermometer Work?

When you are sick, your mother takes your temperature with a glass thermometer containing silvery liquid called mercury. This type of thermometer, the mecury-in-glass type, is made in four parts: a sealed glass tube, a glass bulb at the bottom (the part you put in your mouth), a scale of measurements, and a liquid, such … Read more

How Were Early Aqualungs Made?

The ancient Greeks and Turks have been called the “Fathers of Modern Diving.” As they dove for sponges in the Aegean Sea more than 2,000 years ago, they learned many techniques which are still useful to divers today. These ancient divers realized that the more air a diver took down underwater with him, the longer … Read more

What Makes a Boomerang Return?

Boomerangs are V-shaped devices, opening at an angle anywhere from 90° to 160°, depending on their use. There are two types of boomerangs, the returning and the non-returning. The best known type is the returning. When thrown correctly, this type returns to the thrower without his moving and so is used mainly for fun or … Read more

How Does a Telescope Work?

Basically, a telescope is a long tube with magnifying lenses at both ends. The end you put to your eye has two convex (curved outward) lenses, which magnify the image. At the far end of the telescope is a concave (curved inward) lens which draws in the light. The distance between these two sets of … Read more

Why Is Unexpected Money Called a Windfall?

When a person wins money in a lottery or on a TV game show, people often say that he had a “windfall,” which means that he had an unexpected piece of good luck. The word “windfall” came into being 900 years ago in 11th century England. It seems that William the Conqueror, who ruled England … Read more

Did a Beard Ever Start a War?

Surprisingly enough, yes! It all happened back in 1152 in France. King Louis VII, who wore a beard, married the lovely Eleanor of Aquitane, daughter of a French duke. As a dowry, Eleanor’s father gave Louis two provinces in Southern France. Then Louis went off to the Crusades and, alas, returned without his beard. Eleanor … Read more

How Did Different Beards Get Their Names?

The popularity of growing beards has increased greatly in the 1960s and 1970s, but men have been letting their chin hair grow since ancient times. And not only did they grow them, but gave them as much care as women give their hair-dos today. The ancient Syrians oiled and curled their beards. The ancient Egyptians … Read more

If Girls Whistle, Will They Grow Beards?

This may sound silly to you, but there were many ancient taboos against whistling that have come down to us today as superstitions. These taboos probably began when early man heard strange, new sounds and gave each its own special meaning. For example, when he heard the whistling of strong winds and it was followed … Read more

When Did Men First Start To Shave?

To shave or not to shave? That has been the question down through history. The answers, however, have been closely associated both with fashion and with religious customs. Although we do not know who the first man was to shave off his beard, we do have records showing that ancient Egyptian men shaved because it … Read more

How Did Coats of Arms Originate?

In the Middle Ages, knights put cloth coats over their armor to keep the sunlight from making the metal too hot. On each knight’s cloth coat was sewn an original design which was a symbol of important events in the knight’s life, outstanding qualities he possessed, or a pictorial representation of his name. Designs included … Read more

Why Do People Put Tombstones on Graves?

The marking of graves goes back to ancient times when primitive people put stones on top of graves. These superstitious people believed that evil spirits lived in the bodies of dead people and that the stones would prevent these evil spirits from rising up. These stones also served to mark the grave as a warning … Read more

Who Were the First People To Use Yo Yos?

Although yo-yos have been found on ancient Greek vase paintings from the 8th century B.C., not too much is known of their use in those early times. Much more is known of their origin and use in the Philippine Islands, where for centuries yo-yos were jungle fighting and hunting weapons. Hundreds of years ago, the … Read more

How Did People Start Saying OK?

Most people all over the world, even if they do not understand English, understand and use the American expression “OK.” Nobody knows for sure exactly where or when that expression became part of our language, but there are several possible sources that are accepted. Some believe that “OK” may have come from the Choctaw Indian … Read more

Why Do People Mount a Horse from the Left Side?

The custom of mounting a horse from the left side has really nothing to do with the horse’s preference. The custom probably began hundreds of years ago when men wore long swords on their belts. A man’s sword hung down his left leg, making it easier for him to pull it out quickly with his … Read more

How Did April Fool’s Day Begin and how did it get its name?

The custom of playing tricks on friends on April 1st is believed to have originated in France in the middle 1500s. Before that time, one calendar was used throughout Europe. Under this calendar, each new year began on April 1st. On that day, people celebrated by exchanging gifts and visiting each other. Then in 1564, … Read more

How Was the First Toothbrush Invented?

The earliest toothbrush was shown to the world back in 1770, but what a strange beginning it had! A man named William Addis was serving a sentence in England’s Newgate Prison for having started a riot. With a great deal of time on his hands, he began thinking how he would make a living when … Read more

How Were Pretzels First Made?

The history of the pretzel goes back to the early part of the 7th century. Its beginnings are attributed to a monk in Southern France whose duties in a monastery included baking bread. One day, so the story goes, the monk took strips of bread dough and shaped them into looped twists. Its design was … Read more

When Was Pizza First Made?

If you want to go back in history and take the ingredients that go into pizza to see when they might first have been put together, you could probably trace the pizza back 2,000 years to the time when Roman soldiers added olive oil and cheese to Jewish matzohs! Ever since ancient times, Italians have … Read more

Who Were the First People To Use Pencils?

Pencils, as we know them, are a fairly recent invention, less than 200 years old, although man has been writing with other tools since ancient times. These include flints to scratch on cave walls, fingers dipped in plant juice or animal blood, lumps of earth, and pieces of chalk. The earliest crude “pencils” were probably … Read more

How Did a Ship’s Speed Come To Be Measured in Knots?

Sailors on early ships had no real way of knowing how fast they were traveling and how far they had gone in a specific period of time. So a system of measuring was devised, using a log of wood. The log had a weight tied to one end and a long rope attaching the other … Read more

Who Made the First Traffic Laws?

Laws regulating the direction of traffic began hundreds of years before the automobile was even invented. England was the first country to establish any kind of law regarding its roads. In 1555, a law was passed requiring people to keep the roads in front of their property repaired at their own expense. Because of this … Read more

Why Do Cars Drive on the Right Side of the Road?

Our practice of driving to the right can be traced back to Ancient Rome, where soldiers carried shields in their left hands. To protect themselves from strangers on the road, they walked on the right side so that the shield on the left provided that protection. As the Roman Empire spread over Europe, people followed … Read more

Where Did the First Doggie Bags Originate?

Although no one knows for certain how the custom of taking food home for a doggie, or anyone else, began, we do know that in Ancient Rome, when a host had guests to dinner, he gave each one a fine cloth napkin in which to take home fruit from the meal. Any guest refusing to … Read more

How Was Cheese First Discovered?

It is believed that 3,500 years ago, an Asian traveler set out on a long journey across a hot desert. He probably carried a canteen filled with milk to satisfy his thirst. At that time, canteens were made from the linings of sheep’s stomachs, since they were waterproof. When the traveler stopped to rest for … Read more

What Accident Led to the Invention of the First Hot-Air Balloon?

Madame Jacques Montgolfier, the wife of a French paper manufacturer, had washed one of her petticoats and hung it on a line over a small fire to dry. As her amazed husband watched, heat from the fire inflated the petticoat and caused it to rise. This led Jacques and his brother, Joseph, to begin experimenting … Read more

Was Bowling Ever Illegal in the United States?

Because bowling was a popular sport in many European countries beginning in the 1100s, it was only natural that colonists brought this game with them to the New World. The English brought 9-pin bowling here; the Germans brought their version called Kegles; and the Dutch brought their Skittles. As bowling increased in popularity in the … Read more

Where Did Bowling Begin?

Relics found in tombs of ancient Egyptian children who lived in 5200 B.C. show that these children used 9 pieces of stone set up as pins and a stone ball to roll against them. This ball had to be rolled through an arch made of three pieces of marble before it hit the pins. There … Read more

How Did The Names of the Days of the Week Come To Be?

The names of the days of the week came to us from the mythological gods of Ancient Rome. It was the Romans who were the first to begin their days at midnight, while the ancient Babylonians began theirs at sunrise and the ancient Jews, at sunset. Sunday was named because it was the day sacred … Read more

When Does a Leap Year Baby Celebrate His Birthday?

A baby born on February 29, 1980 will not have another February 29th birthday until 1984, the next time a Leap Year occurs. What does he do then to celebrate his birthday in 1981, 1982, and 1983? A Leap-Year baby can choose his own birthday from either February 28 or March 1, two dates which … Read more

How Did Birthdays Come To Be?

Birthdays are one of our very oldest customs. We can suppose that prehistoric mothers and fathers noticed that their children grew up in stages. One day, the baby could only gurgle; then the next, he might repeat a word he heard his parents say. One day, a baby could only crawl; then the next, he … Read more

Why Do We Use Blue for Boy Babies and Pink for Girls?

In ancient times, people believed that evil spirits could do harm to infants. They also believed that these evil spirits were allergic to certain colors, especially blue. Since blue was the color of the Heavenly sky, it was the color that was supposed to make evil spirits powerless and drive them away. This belief in … Read more

Why Do Barber Shops Have Red and White Poles Outside?

why do barber shops have red and white poles outside

Long, long ago, barbers did much more than cut people’s hair. Barbers performed some minor operations on people, especially blood-letting, or bleeding. This was believed to be a cure for some illnesses in which the “bad blood” was supposed to leave the body. To perform the operations, barbers had their patients hold onto a pole … Read more

Why Did Men Begin Walking on the Side of Woman Nearest the Road?

Back in 16th century England, before homes had indoor plumbing such as toilets and sinks, chamber pots were used as receptacles for dirty water and wastes. People had the habit of emptying these chamber pots by throwing them out of upper-story windows of their homes into the gutters. Therefore, a stroll along the city streets … Read more

Why Do Men Have Buttons on Their Jacket Sleeves?

The buttons on the sleeves of men’s jackets serve no real purpose today. But there are many stories explaining how they came to be there. One story involves Frederick the Great, who was King of Prussia in the 1700s. Frederick’s armies were involved in a great many wars, and he was often on the field … Read more

How Was the First Photograph Made?

As far back as the 1500s, men had been trying to devise a camera to make photographs. The first rough camera was called the camera obscura, which means “dark chamber,” for that is exactly what it was, a large darkened box with a hole in one side through which light could enter. This light formed … Read more

Who Invented the Phonograph?

Charles Cros, a Frenchman, drew up a plan for a phonograph in 1877, but never built his mechanism. At the same time, Thomas Edison had been working on a phonograph of his own and later that same year, patented the first of his many versions. When Edison had learned of Alexander Graham Bell’s new invention, … Read more

When Was Wallpaper First Used?

Wallpaper was created in the 1500s as a practical and cheap substitute for woven tapestries, leather, and wood paneling that had covered the walls of European homes and palaces for hundreds of years. The earliest wallpaper uncovered, a black and white pinecone and leaf design, dates back to 1509. The date is known because the … Read more

When Did Card Games Originate?

The earliest card games were played with bank notes, but playing cards as we know them are believed to have originated about 800 A.D. in Hindustan, an area in Northern India. During the next several hundred years, their use spread to Europe. The four suits, hearts, spades, diamonds, and clubs, first appeared in France in … Read more

Where Was the First Zoo?

The earliest collection of animals, though not a public zoo, was established by Shulgi, ruler of Ur (now Southeast Iraq), around 2400 B.C. Queen Hatshepsut of Egypt collected animals from all parts of Africa and established the first real zoo in 1500 B.C. Chinese Emperor Wen Wang followed her example in 1100 B.C., when he … Read more

Why Did Pirates Wear Earrings?

The tradition of wearing earrings goes back to early days when earrings were treated not as jewelry, but as amulets to protect the wearer from wicked spirits. This tradition carried over to sea-going men, especially pirates who believed that earrings made them see better and could give them stronger eyesight. Did it work? Who knows! … Read more

Who Were the First Pirates?

In ancient times, sea traders often raided cargo ships on the Mediterranean Sea and in the Far East. These men were called sea rovers, or pirates. They also robbed coastal towns of their riches and held prisoners for ransom. Since piracy was against the laws of all nations, pirates did not fly any one nation’s … Read more

Who Made the First Match?

In 1780, a group of French chemists discovered how to combine chemicals to produce fire. Their matches worked well, but the burning of one chemical, phosphorus, was found to be poisonous. A safe striking match was developed by John Walker, an English pharmacist, in 1827. He accidentally scraped the end of a stick he was … Read more

Where Was the Wheel Invented?

The wheel is one of man’s most important inventions, but no one knows for sure how, when, or where it was first developed. It is probable that early in man’s development, the idea came to someone of using a tree trunk as a huge roller for moving heavy objects. We do have proof that by … Read more

When Did Orchestras Begin?

We can probably trace the origin of the orchestra back to the origin of man, for we know that primitive people had crude instruments, and we can guess that they probably played together in groups. However, the idea of a real orchestra had to wait for the development of wind and bowed string instruments, as … Read more

How Was Music First Written Down?

Ancient works of art that have been uncovered show us that music goes back as early as 4000 B.C. But the earliest form of written music with symbols has been traced to the ancient Greeks who used letters of the alphabet to represent musical tones. This music was written down for choruses who sang and … Read more

How Were the First Drums Made?

People in Ancient Sumeria made drums as long ago as 3000 B.C. Although drums can be considered the oldest musical instrument, they were also used as a method of communication, a call to battle, and to keep a rhythmic beat in ceremonial dances. Drums can be grouped into three basic shapes and each is made … Read more

Who Wrote the First Songs?

Songs have been written and sung all through history. Egyptians sang songs as early as 4000 B.C.; Hebrews in 900 15.3.C. had songs and chants which appear in the Bible; and Greeks in 500 B.C. had choruses. For a long time, there was no universal method of recording words and music on paper. Songs were … Read more

How Long Have Bells Existed?

Bells have been used throughout history mainly to call worshippers to religious services. But they were also used to announce the arrival of fresh foods at ancient markets, to signal the time of day, to alert people to an enemy attack, to announce deaths, and to celebrate important dates. Bells originated in the 800s B.C. … Read more

When Did Books First Appear?

The oldest books known were baked clay tablets used about 3500 B.C. in Mesopotamia. They were deeds to land and other business records. By 25 B.C., the Egyptians had found a better way to produce books. They used papyrus, a reed-like plant, and pasted layers of its inner bark together, making a sheet. Sheets were … Read more

How Did Myths Begin?

Some historians believe that myths began as actual historical events which, when told and retold through the ages, became exaggerated. Other historians believe that ancient people created myths to explain how and why things which they didn’t understand could happen: how the earth was created, how man came to be, why the sun rises, why … Read more

When Did People Learn To Read?

All civilizations have had forms of writing and reading. People first used pictures as words. The Babylonians and ancient Egyptians passed beyond this stage and used hieroglyphics, which contained symbols along with pictures. In 1200 B.C., the Phoenicians, with their alphabet, were the first people to read sounds from letter symbols rather than from pictures. … Read more

Who Developed the Modern Alphabet?

Even though our modern 26 letter alphabet is called the Roman alphabet, the Romans did not invent it. They simply refined and polished a system of written language that had been developing for thousands of years in many nations. Most alphabet letters began as a simplified version of ancient drawings of animals, objects, or signs. … Read more

When Were Knives, Forks, and Spoons First Used?

There is no certain date for the first use of these utensils by humans. But we know that knives have been used from the time that cavemen began hunting. Any material that these primitive people found that was hard and sharp became a knife with which to skin animals and cut meat. These same cavemen … Read more

How Did Governments Begin?

Present day government grew out of the family and clan organization that made up ancient tribes. Some people working together to lead or control a group of others formed the beginnings of government. Primitive governments were tied in closely to religion, with the king or chief of a tribe also the high priest. As cultures … Read more

Who Established the First Calendars?

Primitive humans used the cycles of nature as their calendars. They noted day and night, the sprouting of leaves, heavy rainfalls, number of harvests, and, later, the changing position of the sun and moon among the stars. They used all these as time markers. These observations were the forerunners of the more elaborate calendars later … Read more

When Were the First Clocks Made?

People had many ways of telling time long before mechanical clocks were developed. Prehistoric man probably watched the movements of the sun and the changing shadows on the ground to measure time. Sundials, developed as early as 2000 B.C. in Babylon, were the earliest instruments for telling time. The sun’s movement from east to west … Read more

What Were the First Methods of Measurement?

Ancient people began to measure things animals, for example, by comparing them to the length of a stick or a stone. Then, measurements were made by comparing parts of the human body to the length or width of the object to be measured. The width of a man’s thumb was used to measure an inch. … Read more

How Did Names Begin?

Humans have used given, or first, names throughout recorded history. Even the most primitive societies gave each member a name. These names originated when early humans used specific cries and sounds to identify themselves. Each individual had a sound that named him. Names were later given by the tribe family or chosen by the individual: … Read more

How Were the First Paints Made?

Over 100,000 years ago, before the beginning of recorded history, people made paints from plants, from charcoal, from clay, from minerals in the soil, and from blood! These colors, or pigments, were ground up and mixed with water, oil, or animal fat, then made into a paste. Primitive man then either rubbed this paste on … Read more

Who Made the First Pottery?

In 5000 B.C., primitive people in Egypt and the Near East began making pottery to use as simple household utensils. They shaped clay cups by hand and baked them in the sun. Molds gave pots another shape; clay was smoothed inside a reed basket or a coarsely woven sack. The mold burned off as the … Read more

When Was Cloth First Made?

Silks, wool, cotton, and flax are among the first fibers used by humans to weave cloth. Wool was probably the first cloth used, dating back to 6000 B.C. in Turkey. Linen was woven from flax in Egypt in 5000 B.C. It was not only used for clothing, but also as a wrapping for mummies. Cotton … Read more

How Did People First Sew Clothes?

It is believed that people began sewing pieces of animal skins together to make clothes about 15,000 B.C. They used needles made of bone or wood. The basic design of the needle has not changed since it was first invented. A thread is run through a hole in one end of a straight or curved … Read more

When Were Animal Skins First Used As Clothes?

Since early humans traveled from place to place and from climate to climate, they discovered the need for skins as protection from the cold. Hunters might have first used animal skins in hunting to cover their scent or to disguise their appearance, thus allowing them to get closer to their game. Skins might have also … Read more

When Was Land First Bought and Owned?

In 5000 B.C., the idea of a person owning private property did not exist. People owned tools and houses, but no man owned the land. Since farmers had not yet developed techniques of fertilizing and rotating their crops, soil exhausted quickly and families moved on. When people learned how to keep nutrients for plants in … Read more

When Did People Begin To Build Homes?

Ten thousand years ago, after man had tamed animals, he began to build temporary settlements near rivers and streams, and in woods. His house was built of mud and reeds, and was rounded and roughly semicircular, as he attempted to duplicate the shape of the cave he had moved out of. These houses were fragile … Read more

When Did People First Use Addresses?

Because early rural communities were so small and because all communications were delivered by word of mouth, there was no need for any mailing addresses. People knew the whereabouts of their relatives and neighbors, and messages were easily directed to them. Then, as more of the common folk learned to read and write and as … Read more

When Did People First Begin To Separate into Families?

Social development came early to the new humans. At first, people lived in packs, with each member doing a job that served the whole group: finding and gathering food, caring for the young and ill, keeping the fire, building shelters, or locating caves to serve as shelters. A group could more easily defend itself against … Read more

When Was Food First Cooked?

For millions of years, humans ate the fish and meat they hunted and fruits and vegetables they grew in their natural state, raw. Gradually, they learned to improve the taste of food, to keep it from spoiling, and to make it useful in more ways by cooking it, drying it for later use, or milling … Read more

Were Humans Hunters or Farmers First?

Prehistoric people who first appeared on earth 2 1/4 million years ago depended on the hunt for their supply of food. They picked and ate wild grasses and plants, and hunted animals to use their skins as clothing and their meat as food. Gradually, man learned to make weapons with which to hunt and kill … Read more

When Was Fire First Used?

It is believed that the earliest humans first used fire for warmth, and later for cooking food, for shaping weapons and tools, for protection against wild animals, for changing clay into pottery, and for light. These early people got their fire from brush fires ignited by lightning, from the fire of volcanoes, from the heat … Read more

When Did Language Begin?

It is believed that human speech developed between the times of the Neanderthal Man (beginning in 100,000 B.C.) and the Cro-Magnon Man (beginning in 35,000 B.C.). The actual process of this development is unknown, but most theories claim that language developed either as an imitation of animal sounds, like grunts and barks, or as a … Read more

When Was History First Recorded?

The history of a prehistoric tribe of people was first passed on by word of mouth. Anything that was written upon, clay tablets, animal skins, or wood carvings, by early civilizations has vanished, worn away by time. However, one example of recorded primitive history which remains is the paintings of the Cro-Magnon Man on the … Read more

When Did Modern Man Appear on Earth?

It is believed that man developed from the same general grouping of animals as monkeys and apes, however, the ancestors of the human race were a separate group of animals which walked erect on two feet. It is thought that man, with his present build, was established by 25,000 B.C. The Neanderthal Man and Cro-Magnon … Read more

Why Was the Mary Celeste Known as a Jinx Ship?

The Mary Celeste had a strange jinxed history ever since the time of her launching in 1861. Her first captain died after only a few days in command. Then she collided with another ship, damaging her hull and sinking the other ship. A few years later, she ran aground in Nova Scotia, and the man … Read more

When Was a String of Beads Used as a History Book?

Even though the Indians in the eastern part of North America used the white, purple, and black beads made from shells mainly as money, or wampum, they also used them to record important happenings in the tribe. Wampum beads were strung on belts to record each event in a story, and served as a reminder … Read more

What Is the Mystery of the Lost Colony?

In 1586, fifteen Englishmen settled Roanoke Island, off the coast of North Carolina, to establish England’s claim to the island. The following year, 117 additional settlers, men, women, and children, arrived, only to find that the original fifteen men had disappeared without a trace. Then three years later, in 1590, an English supply ship came … Read more

How Did Mystery Hill Get Its Name?

The huge stone slab at Mystery Hill in New Hampshire has long been a puzzle. Who put it there? Why? And what was it used for? The slab seems to be the top of a stone table, which may have been the scene of animal or human sacrifice. The grooves along the edge of the … Read more