Why do your ears hurt on a plane? Your ears hurt on a plane because the pressure in the cabin is different to the pressure in the fluid in your inner ear, which causes pain. If you have ever ridden on an airplane, you have probably felt your ears go funny. You have probably also […]
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Why does copper kill bacteria? Copper can kill bacteria by pulling electrons away from the bacteria’s cell wall, breaking it. There are several materials and chemicals that are good at killing bacteria. Of all the metals, only copper, silver, and zinc can kill bacteria. Some plastics have been engineered to kill bacteria and there are
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Why do moths fly into candles? Moths fly into candles because they are trying to keep their back to the light so that they don’t fly upside down and they fly into the candle by accident. There are several theories and the most prevalent theory is that they mistake the light for the light of
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Why are all animals becoming crabs? Well, all animals are not becoming crabs, but crabs have evolved separately five times, so there must be something about the crab form that is very advantageous. We don’t see that many of them, but there are more than 7,000 species of crab. They vary hugely in habitat and
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Why can some people tolerate spicy food better than other people? The people who are more able to tolerate spicy food either have fewer taste receptors because of genetics or have desensitized the taste receptors that they do have. We find food that has capsaicin in it spicy. These are foods such as chili peppers
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Do fish sleep? All fish sleep, but they have different ways of doing it. Almost all complex organisms, with a few exceptions, need to sleep, although they all have different sleep requirements and methods. Ants microsleep for a few minutes at a time, many times a day, while dolphins put one side of their brain
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What are predator prey dynamics? Predator prey dynamics refers to the connection between the number of predators and the number of prey. If one number goes up, the other goes up, and then they drop again until the numbers balance. We might imagine that the number of rabbits and the number of foxes are always
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How do mangrove trees live in saltwater? Mangrove trees are able to live in saltwater because they have a way of removing the salt from the water. Because of this, they are usually found in seawater, or very salty still water. There are a lot of organisms that can survive in salt water and a
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What is a lava cricket? Lava crickets are a species of cricket that appear on freshly cooled lava and don’t seem to live anywhere else. Not a lot is known about them. The Latin name for the lava cricket is Caconemobius fori. They are also called lava crickets, dark lava cricket, or ‘ūhini nēnē pele
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How is nanotechnology used in medicine? Currently, nanotechnology is used to deliver drugs, improve diagnostics, and help regenerate after illness or surgery. Modern technology is still limited, and the future of nanotechnology could bring an amazing revolution in medicine. Let’s look at what nanotechnology is, how it is currently used, and how it could be
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