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How can you spot a Stradivarius?

Started by charles dunbar

How and why do batteries leak?

Started by Ashley Rose

How do you make a lemon-powered iPod?

Started by Sahil Kumar

Why is mobile phone use banned at petrol stations?

Started by boblflef@hotmail.com

Did Chinese and Japanese use Morse?

Started by David Shaffer

How do 'springy stilts' work?

Started by Clive Stewart

 

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