How can opera singers sing so loud? By training their diaphragm, their lungs, using their mouths to amplify the sound as much as possible, and adjusting the frequency of the sound they are making. Opera singers are louder than the average person, but they also have a way of making their voices easier to hear, […]
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How did a pterodactyl fly? By jumping 2.5 meters into the air and then flapping. These days, we use pterodactyl to refer to any of the flying dinosaurs that looked similar, but pterodactyl is only one species. The family is called pterosaur. In Greek, “pteron” means winged and “sauros” means lizard. Pterodactyl comes from “pteron”
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Why do poppies make opium? Not all poppies do make opium, but the ones that do, make it to ward off pests. There are 775 different species of poppy, known as the Papaveraceae family. Most of them produce the milky latex that becomes opium in the opium poppy, but only the papaver somniferum is able
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How do hallucinations happen? They are caused by a chemical imbalance or some kind of abnormality in the brain. All hallucinations are created by the sensory parts of our brain and they are basically firing without the stimulus. If you look at a dog, light is bouncing off the dog and entering your eyes. Your
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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 do flies perceive time? Flies see the world in slow motion, possibly seeing things four times slower than we do. We have probably all tried to swat a fly sitting on a table. You swing your hand towards it, you impact the table and you’re sure you got it, only to see the fly
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Why does it rain in a rainforest? Tropical rainforests cause rain when water is released by the trees, but temperate rainforests form where there is a lot of natural rain. There are tropical rainforests and temperature rainforests. Tropical rainforests form in very hot places, just to the north and the south of the equator. Temperate
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Why do giant redwood trees grow so big? It is a combination of things. It could be the amount of soil they have access to, it could be the climate in California, it could be their resilience, and it could be because they live so long. Giant Redwood trees are famous for their size. They
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Does being cold or wet increase your chance of catching a cold? Being wet doesn’t make much of a difference, but being exposed to cold air can increase your chances of catching a cold. And, if you are cold for a long period of time, it can lower your immunity. The common cold is caused
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Why do some plants bloom at night? To avoid predators and because they are pollinated by insects that are nocturnal. All plants that have flowers use them to attract pollinators so that they can spread their DNA as far as possible. There are some plants that self-pollinate, but the risk there is that they have
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