What was the underground railroad? It was a network of routes and people in the United States of America that helped slaves escape to freedom. It started in the end of the 18th century and ran until the end of the Civil War in 1865. Slavery has existed around the world for as long as […]
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What is truth serum? It is a drug that prevents people from censoring themselves so they reveal the truth. These drugs are usually barbiturates and there is no real proof that they work. People have searched for a drug that can help them get at the truth for thousands of years. The very first type
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How does a pipe organ work? By letting different amounts of air into different length pipes to produce a sound. A pipe organ works on the same principle as a whistle. A simple whistle is just a pipe. When you put enough air in one end, you can get a sound out of the other
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What is the Hudson Bay Company? It is a company that began when two French traders set up a fur trading post on Hudson Bay in 1670. The Hudson Bay Company was started to trade furs with Britain, but it was another example for Britain that they could use private enterprise to colonize parts of
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When did Britain become an island? It was connected to continental Europe by a land bridge that was destroyed 450,000 years ago. Some of the land bridge returned and that was submerged under the sea in about 6100 BC. If sea levels were a little lower than they are now, a lot more land would
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How thick is the atmosphere? The atmosphere is generally considered to be 10,000 km thick. Our atmosphere is made up of gas. It is 78% nitrogen, 21% oxygen, and one percent other gases. Those other gases are argon, carbon dioxide, helium, neon, methane, krypton, and hydrogen. There is water vapor as well, which is a
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What happened at the Bay of Pigs? An American led attempt to overthrow the communist government of Cuba failed. The Bay of Pigs is on the southern coast of Cuba. It is 150 km away from the capital city of Havana. There are a lot of wild pigs in the area, which could be why
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How does a TV screen display different colors? By using different intensities of red, green, and blue. These colors can be displayed with liquid crystal or with gases. All screens, no matter how they are made, are divided up into pixels. The word pixel was made from a combination of “picture” and “element”. One pixel
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When did ultra processed food start? Technically, humans have always processed food, but the modern style of processed food came into being in the middle of the 20th century. The literal definition of processing food is to “perform a series of mechanical or chemical operations on food in order to change or preserve it.” That
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When were AD and BC decided? AD probably started in AD 525 and BC probably started in AD 731. All of these are “probably” because there is no concrete evidence. AD is an abbreviation for anno Domini Nostri Jesu Christi, and means “in the year of our Lord Jesus Christ”. BC stands for Before Christ.
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