How does electricity get to my house? Electricity gets to my house in three stages. These are generation, transmission, and distribution. The first step is obviously to make the electricity. Most countries use either coal, natural gas, or nuclear power stations. They also use renewables such as solar, wind, and hydro power. These ratios break […]
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When did commercial aviation become common? Commercial aviation “took off” in the 1950s, but it wasn’t just changes in airplanes that made this possible, it was changes in society and the way people thought as well. And by common, I mean used by ordinary middle-class travelers. Commercial aviation started not long after the Wright brothers
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Are there any unpickable locks? There are probably no unpickable physical locks, but some modern high-security locks are very difficult to disable. If given the right tools and enough time, pretty much any physical lock can be picked. And, if picking it is not possible, it can probably be drilled through, or even removed from
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Why did Captain Scott’s Antarctic expedition fail? Captain Scott’s Antarctic expedition basically failed because of mismanagement and the weather. Captain Robert Falcon Scott was a British naval officer and explorer. He led two major Antarctic expeditions. The first was the Discovery Expedition (1901–1904). It produced a large amount of scientific work, but it did not
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Why do zebras have stripes? Nobody knows the actual reason, but the main theory is that they deter biting flies. Other theories are that they could also be for camouflage or thermoregulation. There doesn’t have to be one single reason, and it could easily be a combination of all of these. There are three different
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Why did the Spanish Empire end? The Spanish Empire came to an end because of, amongst other things, mismanagement, the economic situation, involvement in too many wars, and overexpansion. The Spanish Empire is generally considered to have come to an end in 1898, but it was the result of things that had been going on
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Why do some places use revolving doors? A lot of places use revolving doors because they reduce heating and cooling loss, they keep noise and dirt out, they are easy to open, they are quiet, they don’t need power, and they can regulate the flow of people into a building. The first patent for something
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Does vitamin C prevent colds? No, vitamin C doesn’t prevent colds, but it can reduce the length of time people are sick by about 8 to 10%. Many of us believe that taking a lot of vitamin C will help to keep off colds, or cure us if we are sick. Research shows that such
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What is GM food? GM food stands for Genetically Modified food, and it means any food that is produced using some kind of genetic engineering to alter its DNA. Generally, GM food refers to either taking a gene from one plant and inserting it into another or removing a gene that a plant already has.
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What would machine consciousness look like? It is very difficult to describe what machine consciousness would look like because nobody really knows what a conscious machine would be. The biggest problem we have with this question is that we can only judge consciousness based on our own. On this planet, at the moment, as far
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