What happened at the Bay of Pigs? An American led attempt to overthrow the communist government of Cuba failed. The Bay of Pigs is on the southern coast of Cuba. It is 150 km away from the capital city of Havana. There are a lot of wild pigs in the area, which could be why […]
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How does a TV screen display different colors? By using different intensities of red, green, and blue. These colors can be displayed with liquid crystal or with gases. All screens, no matter how they are made, are divided up into pixels. The word pixel was made from a combination of “picture” and “element”. One pixel
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When did ultra processed food start? Technically, humans have always processed food, but the modern style of processed food came into being in the middle of the 20th century. The literal definition of processing food is to “perform a series of mechanical or chemical operations on food in order to change or preserve it.” That
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When were AD and BC decided? AD probably started in AD 525 and BC probably started in AD 731. All of these are “probably” because there is no concrete evidence. AD is an abbreviation for anno Domini Nostri Jesu Christi, and means “in the year of our Lord Jesus Christ”. BC stands for Before Christ.
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What is a nebula? It is an enormous cloud of dust and gas in space. The word nebula is a Latin word, and it means “mist or cloud”. You can see it in the root of the word nebulous. And when we say enormous, most nebula are tens to hundreds of light years across. They
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Why do geese fly in a V-formation? To aid communication and to fly more efficiently. Geese don’t always migrate, but when they do, they can fly for thousands of kilometers and Canada geese can fly 2,400 km in 24 hours! If they find a good tailwind, they can reach speeds of 110 km/h. You may
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What is a geosynchronous orbit? It is an orbit that exactly matches the rotation of the Earth. A satellite in geosynchronous orbit goes around the Earth at the same speed the Earth rotates, completing one orbit every 24 hours. From the ground, the satellite appears to be stationary. There are thousands of satellites above us
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What are pork barrel projects? It is when politicians secure public money for projects in their home constituencies in order to get support and be reelected. The projects are usually expensive and usually not necessary. In most countries that have a democratically elected government, it is made up of members that are chosen to represent
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What is price elasticity of demand? It is a measure of how much demand for a product changes depending on its price. An object’s elasticity is how much it can stretch. The elasticity of rubber is obviously higher than that of steel. In economics, the elasticity of a price is how much that price can
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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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