Science & Tech

Why are leaves green?

When we look at plants there are many features that might stand out to us such as flowers and bark on trees. One of the most common features in plants is green leaves. But why do so many plants have green leaves?  All leaves contain a pigment called chlorophyll. A

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THE SCIENCE OF SWEAT

WHAT IS SWEAT? Sweating is a natural release of fluids from the skin. When sweat evaporates from the skin, it cools the body down. You can see this effect if you lick the back of your hand and blow in it. You can feel the cooling effect and may see

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Why are leaves waterproof?

WHAT CAN WE LEARN FROM PLANT LEAVES? Most leaves are quite waterproof. Their outer surface is covered in a waxy cuticle. A cuticle is a coating made of many layers of different biological materials. These materials are mostly hydrophobic. Hydrophobic materials repel water. The main function of the waxy cuticle

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What is Gambling?

Gambling is when someone risks money or valuable objects in order to place a bet. This money may be lost if the person bets incorrectly or more may be won if they are correct. People usually gamble on the results of sports games, such as football or basketball.   Many people

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Cybercrime in Africa: the solutions.

The world is experiencing a boom in cybercrime. The cost of these attacks to African economies was calculated at $3.5 billion in 2017. This number has certainly risen since then.  Digital technologies are extremely important in modern society. From the most high-tech servers to the phones in our pockets, we

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What is virtual reality?

Imagine you are standing in an empty room. Someone comes in and hands you a headset and a handheld device, and you put the headset on. Suddenly, you see a forest stretching out around you. To your left you see a river, and to your right you see a forest

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