What is the biggest plant in the world? The Posidonia australis in Shark Bay, Australia. It is 200 square kilometers, which is 23 square kilometers larger than the city of Washington DC. It is not just the largest plant in the world, it is the largest organism as well. Researchers sampled it in many different […]
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What do tonsils do? The tonsils contain a lot of white blood cells and they are one of the body’s first lines of defense against infection. Firstly, do you know where your tonsils are? For the whole of my life, I thought the thing hanging down at the back of my throat, just behind the
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What causes dyslexia? It is caused by a difference in the brain parts that process reading, but nobody knows exactly what causes that difference. As an aside, there is a common joke that the word for people who cannot read or spell very easily, dyslexia, is one of the hardest words to read or spell.
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Why do prices always go up? They go up because the value of our money decreases. If you go online, you can find inflation calculators for most currencies. For some countries, those currencies no longer exist. If you look at any country that has a currency with a history, even if that is only a
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Did dinosaurs really have feathers? A lot did, but, then again, there were a lot that didn’t. And they were more a kind of fluff than the feathers that we see on birds today. The idea that dinosaurs might have had feathers was first put forward in 1876. A British biologist called Thomas Huxley realized
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Why do we have fingerprints? We have fingerprints to help us grip and to help us feel things. We all have fingerprints on our fingers that are made up of swirls and creases in the skin of our fingers. All primates have fingerprints, which goes a long way to showing how useful they are for
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Why are cockroaches so strong? They have a very hard exoskeleton, they breathe through different parts of their body, they have a decentralized nervous system, they can eat anything, they have strong immune systems, and they don’t need to eat and drink for long periods of time. A cockroach is not one insect but a
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How does a quantum computer work? They use subatomic particles, which can exist in more than one state at the same time. Regular computers are binary, which means everything they display or calculate is just a series of 0s and 1s. For example the word plasma, is 011100000110110001100001011100110110110101100001. A computer is made up of millions
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Why was the abacus invented? It was invented because merchants needed to keep an inventory, trade was taking off, and the powers that be wanted their tax.. The English word abacus came from the Latin word abax, which came from the Greek word abax, which meant table or tablet. It could have come from an
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How does a telescope work? They used to use lenses, but modern telescopes use mirrors. The first telescopes used lenses in the same way that a camera or a magnifying glass does. The first telescope was made by Hans Lipperhey, a German-Dutch spectacle maker. He used lenses to make glasses and he knew that concave
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