by How It Works Team · 21/07/2012
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Tags: asthmainhalerMDI
03/05/2016
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Do airliners have to obey speed limits in the sky?
How do bikes stay upright?
How is liquorice made?
What are hormones?
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Why do wires and cables tangle so easily?
How come some people are lactose intolerant?
What makes a gemstone precious or semi-precious?
Why are circuit boards usually green?
Why do dogs tilt their heads?
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What happens to fizzy drinks in space?
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