A History of Science

By Tim Lambert Ancient Greek Science The Ancient Greeks were the first scientists. Greek philosophers tried to explain what the world is made of and how it works. Empedocles (c. 494-434 BC) said that the world is made of four elements, earth, fire, water, and air. Aristotle (384-322 BC) accepted the theory of the four… Continue reading A History of Science

A History of Shoes

By Tim Lambert Ancient Shoes Long before history began wore shoes. During the Ice Age, people called Cro-Magnons wore simple leather boots. They lived during an ice age so protecting your feet from the cold was essential. In Egypt, shoes were not necessary because of the hot climate. Most people went barefoot much of the… Continue reading A History of Shoes

A History of Silver

By Tim Lambert Ancient Silver From Ancient Times silver has been used for jewelry and for eating and drinking vessels. People have been mining silver since at least 3,000 BC. Silver was also used for coins. From about 400 BC silver coins were used in Greece. The Romans had a silver coin called a denarius.… Continue reading A History of Silver

A History of Space Travel

By Tim Lambert The beginning of space exploration In the early 20th century Konstantin Tsiolkovsky (1857-1935) realized that only a rocket could provide propulsion in the near-vacuum of space. He also proposed that a rocket should be built in stages so it would dump each stage when its fuel was exhausted. In 1926 Robert H.… Continue reading A History of Space Travel

A History of Surgery

By Tim Lambert Ancient Surgery Surgery was invented in the Stone Age. Some adults had holes cut in their skulls. At least sometimes, people survived the ‘operation’ because the bone grew back. We do not know the purpose of the ‘operation’. Perhaps it was performed on people with head injuries to release pressure on the… Continue reading A History of Surgery

A History of Sweets

By Tim Lambert Early Sweets People have always liked eating sweet food. The earliest sweet was, of course, honey, which people have eaten since prehistoric times. In the Middle Ages, rich people ate desserts like preserved fruits, jelly and dried fruit, and wafers made from batter. The Tudors were also fond of sweet foods (if… Continue reading A History of Sweets

A History of Television

By Tim Lambert Today, television is the main form of entertainment for millions of people worldwide. The word is made up of the Greek word ‘tele,’ meaning ‘far off’ and the Latin word for vision ‘sight’. John Logie Baird, the man who invented television, was born in 1888. Baird invented a primitive system of television… Continue reading A History of Television