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why does it hurt so much when you step on a plug

Balancing your body weight on the pins of a plug puts huge pressure on your foot. ... read more

panning for gold

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

the parts of the earth

When studying the Earth, scientists look at the surface of the Earth and the parts that are above and below it. The atmosphere is a part above the surface while the core is a part below the surface. All of Earth’s parts work together to make life possible. The Earth’s Layers Earth is a terrestrial... read more

how does chlorine clean swimming pools

The chemical reaction that stops swimmers from getting sick. ... read more

anatomy of a spanish conquistador

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