What is the difference between short and long-term memory? Short-term memory holds small blocks of information for a few seconds up to a few minutes. Long-term memory holds information indefinitely. Memories can cross from short-term into long-term and be held for longer. There are three steps in making a memory and short-term memory is the […]
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What is high fructose corn syrup? It is a sweetener made from cornstarch. There is a lot of debate over whether high fructose corn syrup is bad for you or not. The American Food and Drug Administration says there is no evidence to show that high fructose corn syrup is any worse for you than
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How did the Vatican become a country? Benito Mussolini gave it to the Roman Catholic church in 1929. The Vatican is the world’s smallest country. It has a population of 453 people and is 0.44 square kilometers. That makes it about 2,500 times smaller than the city of Rome, which surrounds it. The Vatican is
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How does a naval mine work? There are several different kinds of mine that are intended for different targets and there are several different detonation mechanisms depending on the age of the mine and the cost. Naval mines have existed since explosives were discovered. The first naval mines were used in China in the 14th
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Why are hammerhead sharks shaped like that? The location of their eyes on the end of the hammer give them a greater ability to locate and catch stingrays. There are several different types of hammerhead shark, but they all have the same hammer-shaped head. This hammer shape is called a cephalofoil. The hammerhead shark with
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How is decaffeinated coffee made? There are several different methods, but they all involve washing the caffeine out of the coffee beans. Coffee grows on a bush, which is usually about 1.5 m high. The coffee bean is the seed of the bush and it grows inside a red cherry. The cherries are picked when
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What is a sponge? Sponges are animals that have a very porous skeleton and live in the sea. When we talk about sponges, we are talking about the organisms and not the sponges we use to wash. Although, the one is based on the other. There is a big trade in diving for and selling
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How would a cure for cancer work? It would teach the immune system to attack the cancer cells. All of the cells in our bodies reproduce to make more copies of themselves and they are all programmed to last for a certain length of time. Cells have a preprogrammed signal that causes them to die
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Why are organ transplants so difficult? Because the organs are usually harvested from people who have died, there is a very short time window to perform the transplant, and the immune system tries to destroy the new organ. There are very few organs that can be taken from a living donor. You can obviously take
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Why is there so much gold in Fort Knox? Because it is far enough away from any coast and is protected by the Appalachian Mountains. Fort Knox is famous worldwide for being the place where the United States keeps most of its gold. The building isn’t actually called Fort Knox. It is called the US
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