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anatomy of a spanish conquistador

How a small army of Spaniards brought an entire civilisation to its knees. ... read more

how does a calculator work

Calculators translate numbers into binary code to come up with an answer. ... read more

people who study physics

Physics is about how things work. People who study physics are called physicists. They learn about light and sound. They learn about electricity and magnetism. They learn about force and energy. They learn about how everything works, from the tiniest atom to the vastness of space. Physicists study man... read more

how we use animals

Humans use animals for a wide variety of purposes. Animals such as dogs, cats, and hamsters can be family pets. Horse racing and dog shows can provide entertainment for people. Scientists study animals. Some animals are eaten as food. Humans use many different products made from animals. Farmers raise... read more

why do computers use binary code

The ones and zeros of binary code are the native language of computer chips. ... read more