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matter

Matter is anything that takes up space and has mass. Atoms or parts of atoms form all matter. It is everything from the tiniest electron to the planets and stars. ... read more

people who study chemistry

Hundreds of years ago, people called alchemists used chemical reactions. They used them to make medicines and combine metals. Some of them thought they could create gold from other metals. Some of them thought they could make people live forever. Unfortunately, they were wrong. Today, we know a lot mo... read more

how plants grow

The Life Cycle of Plants ... read more

welcome to venus

The hellish world often described as Earth’s evil twin. ... read more

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