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Learn how cells in the human body work. >>

How do electric circuits work?

Learn how electrons flow through circuits. >>

How does a generator work?

Find out how electrons transmit electrical energy. >>

How do electromagnets work?

Make your own electromagnet. >>

Why do helium balloons float?

How does helium cause balloons to float upward? >>

How do mosquito magnets work?

Is it the best way to get rid of mosquitoes? >>

What are mirages?

What do light waves have to do with mirages? >>

What is the history of mirrors?

What did the first mirrors look like? >>

Where do we get natural rubber?

Does rubber really come from trees? >>

How do telescopes work?

Learn how telescopes help us see far away. >>

What made the hole in the ozone?

Discover more about the ozone layer. >>

Will the Earth ever run out of water?

Find out if we are using up our water. >>

How does fire work?

Find out how fire is made. >>

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