How do parrots talk? They can imitate human speech by passing air across the opening of their trachea using an organ called a syrinx. Parrots don’t talk in the wild. And when we say “talk”, they mimic human speech without necessarily understanding what they are saying. Some parrots have been taught to learn the names […]
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What was the Royal African Company? It was a British slaving company that ties the British royal family to the slave trade. Britain started kidnapping African people as slaves in 1562. It didn’t start out as a national policy, but it quickly became one. John Hawkins is credited as being the “pioneer of the English
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Does blood volume decrease if a limb is amputated? Yes. The kidneys will monitor the blood pressure and try to lower the volume of blood if it is too high. People of the same weight and height don’t necessarily have the same amount of blood and the amount of blood a person has will vary
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What is a Distributed Denial of Service attack (DDoS)? It is when someone tries to shut down a machine or a network by using lots of requests at the same time from lots of different sources. A DDoS is a Denial of Service attack that comes from multiple sources. So, let’s look at a Denial
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Why can’t all animals be domesticated? There are six criteria needed for an animal to be domesticable. The first animals were domesticated about 15,000 years ago. Early people were hunter-gatherers, but they transitioned to agriculture about 10,000 years ago and most animals we use today were domesticated after that. The first animals to be domesticated
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Why do ostriches have two kneecaps? It (possibly) helps them to run faster. What does a kneecap do? The knee is basically a lever and the kneecap is the pivot point. In humans, the knee is the joint between the femur (thighbone) and the tibia (shinbone). The muscle on the front of the thigh bone
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Why are university degrees called a bachelor’s, a master’s and a doctorate? They were named after the people who were trying to get those degrees. Universities have been around since the 9th century. The University of Al-Karaouine in Morocco is considered to be the first university in the world. Some people say that this university
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How wild was the Wild West? Not as wild as Hollywood would like us to believe. The Wild West was the American frontier. It wasn’t called the Wild West until after the American Civil War. The general consensus is that the period of the Wild West lasted from the end of the Civil War to
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How can planes fly upside down? Because of the shape of their wings and the angle that they fly at. Planes fly because of lift. Air is not an empty substance. It has molecules in the same way as a table or a chair. The air is made up of nitrogen, oxygen, carbon dioxide, neon,
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Why is hypothermia dangerous? It is dangerous because it is a fatal condition. Hypothermia is often confused with hyperthermia. Hypothermia is when the human body temperature drops below 35 °C and hyperthermia is when the body temperature is above 37.5 °C. “Hypo” comes from Greek and means “under”. “Hyper” also comes from Greek and means
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