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How it works

how does a calculator work

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

panning for gold

How the 49ers found fortune in the famous Californian gold rush. ... read more

what is life

Look around you. All the stuff, or matter, in the world is either living or non-living. Stuff such as rocks, metals, plastic, water, and air are non-living. ... read more

what is earth science

As far as we know, Earth is the only place in the solar system that contains all the ingredients (liquid water, chemical building blocks, and an energy source) needed for life. All the living things we know of live on Earth. It is home to plants, animals, and humans. Everything on the planet needs eve... read more

space exploration

Humans have always had a need to explore. In ancient times, people could study only the places where they lived. They could only wonder about the rest of the world and what might exist in the universe. Over the years, new technologies developed. With improved modes of transportation, we could explore ... read more