Leather is a widely used material from ancient times. Many things in the ancient and medieval worlds were made out of leather. People made belts and shoes out of leather as we do today. They also made leather jackets and protective aprons and hats and sometimes pants out of leather. They used leather straps to carry boxes and bags.There are a lot of ways of making leather. For making leather you could... 

This planet was discovered by Galileo and it is also known as the ring planet. Haven’t you guessed? Yes, it is Saturn! Though Saturn may be best known for its rings, there are other interesting things about the planet and its surrounding moons. Saturn may be the second largest planet in the solar system, but it holds the record for least dense. Water has a density of 1.0 grams per centimeter cubed.... 

Dynamite consists of different ingredients. But the most interesting of them are …peanuts. So, how exactly are peanuts involved in dynamite? Dynamite is made from nitroglycerine. Nitroglycerine, also known as trinitroglycerin, and glyceryl trinitrate, is an oily, explosive liquid made by nitrating glycerol. So nitroglycerine is made from glycerol. Glycerol or glycerine, is a viscous liquid used... 

Do you think it’s made of paper? Wrong! It’s kind of confusing because we often call it “paper money.” But there is no paper, or even wood, used in any of our printed money. All U.S. currency is made of 75 percent cotton and 25 percent linen. It’s closer to cloth than paper. This product is made by the Crane Company, which is based in Dalton, Mass. The Crane Company created the... 

The world’s largest diamond was the Cullinan, found in South Africa in 1905. It weighed 3,106.75 carats uncut. It was cut into the Great Star of Africa, weighing 530.2 carats, the Lesser Star of Africa, which weighs 317.40 carats, and 104 other diamonds of nearly flawless color and clarity. They now form part of the British crown jewels. The world’s largest documented polished diamond –...