What are self-healing materials? Self-healing materials are materials that can detect when they have been broken and then repair themselves without any human intervention. In essence, our skin and bones are self-healing materials because they know when they have been damaged and can repair themselves when cut without needing any external support. The majority of […]
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Why do some dragonflies migrate so far? Some species of dragonfly migrate a long way because of temperature and other triggers. How they do it is probably more interesting than why they do it. There are two species of dragonfly that we are going to look at today. The first species is called the Green
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Is there anything that can eat plastic? There are some bacteria that can eat plastic and the larvae of the wax moth can also digest plastic. However, they cannot digest all plastics and they take a long time. There is nothing that can eat all plastics. The main problem with plastic is the main reason
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How does CPR work? CPR stands for cardiopulmonary resuscitation and it is a way to keep blood and oxygen circulating around someone’s body if their heart has stopped beating. It can be a way of keeping someone alive long enough for professional medical help to arrive. The “cardio” part comes from the Greek word “kardia”,
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Why do we laugh? Nobody knows for definite, but there are several theories. One of the theories is that we laugh as an evolved response to the passing of stress to show the rest of our herd that the danger has passed. One of the most interesting things about laughter is that it is not
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Why do koalas eat eucalyptus leaves? Koala have evolved to eat eucalyptus leaves because it is the most abundant source of food where they. They question might be, have the evolved to eat the food where they live, or have they moved to those area because it is abundant in the food they can eat?
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Do we need to eat more protein? No, we don’t. With a modern diet, the majority of us get more protein than our bodies can use on a daily basis. The only people who need extra protein are world class athletes. What is a protein? Proteins are molecules that are made up of chains of
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Why is an overdose fatal? It depends on the type of drug, but opioids, which are the most common form of drug, cause death because of a lack of oxygen. When we talk about an overdose, we are typically talking about someone who has taken too many of a particular type of drug. This could
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Is earwax actually wax? No, ear wax isn’t actually wax. It is similar in consistency and texture to wax, which is why it is called wax, but it isn’t actually wax. Let’s look at what earwax is and what wax is. Earwax is technically called cerumen, which is the Latin word for wax. It is
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How do cats land on their feet? Cats land on their feet because they have an inbuilt mechanism called the “righting reflex”, which very quickly tells them which direction they are pointing in and to reorient themselves. Cats are famous for always landing on their feet. We all know that a cat dropped from almost
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