Why do some things smell good and some things smell bad? The reason things smell good or bad is a combination of learned experiences and evolution. We smell in the same way that we taste. Everything around us is made of molecules and some of these molecules are released. If they happen to be released […]
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Why is stainless steel stainless? Stainless steel isn’t actually stainless, but a metal that is able to resist corrosion. Stainless steel is a type of metal that is able to resist corrosion. A lot of metals corrode when they are exposed to oxygen. Oxygen is a very reactive molecule, which is one of the reasons
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Why do we get diarrhea? We get diarrhea because the body is trying to rid itself of some kind of infection, usually bacterial, viral, or parasitic. Diarrhea is a sign that the body is sick and is trying to fix itself. Diarrhea can also be caused by other illnesses or e, but infections are the
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Why is carbon dioxide the main greenhouse gas? Carbon dioxide is the main greenhouse gas because it absorbs more heat than other gases. When we think of greenhouse gases and climate change, we think of carbon dioxide, but it is not the only greenhouse gas. All of these gases are obviously produced naturally, but human
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Why didn’t French decimal time last? It was too hard to alter the way people already told the time to introduce a system of decimal time and too expensive to remake all the clocks. France began to use decimal time on 5th October 1793, just after the French Revolution. The point of the revolution wasn’t
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When was the wheel invented? The wheel was invented in roughly 4200 BC, over 6,700 years ago. I have toyed with whether “invented” might be the wrong word to use here. “Discovered” might be better because there are many round things that naturally exist in the world. However, I think we can safely go with
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Why are flamingos pink? Flamingos are pink because of all the carotenoids that they eat. Flamingos are famous for sleeping on one leg while standing up, for eating upside down, and for being a brilliant shade of pink. However, when they are born, they are a slightly off-white color. They take on their pink color
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Why is breakdancing called breakdancing? Breakdancing was dancing that filled a break in the music. Breakdancing is generally only called breakdancing by the general public. People who breakdance are called breakers, or break-boy (b-boy) and break-girl (b-girl). Breakdancing is a type of dance, but b-boys and b-girls live a lifestyle which has a culture of
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Manor, mansion, villa, stately home or hall? They are all words that describe a large, expensive house, but they have slightly different origins. A manor is a British term now, but the tradition of manors comes from all over western Europe, having started in Rome. The word comes from the Latin “manere”, which meant remain,
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What is a cavity? It is a hole in the enamel of the tooth that bacteria can get in through. We have 32 teeth, assuming you haven’t had your wisdom teeth out, and they are divided into three different types of teeth. We have incisors, canines, and molars. Incisors are the cutting teeth. The name
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