by How It Works Team · 19/01/2013
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How do pet-calming plug-ins work?
Why do some men grow ginger beards when they don’t have red hair?
What is the maximum distance the human eye can see if unobstructed?
What are a hedgehog’s spines made of?
Why do we eat chocolate eggs at Easter?
Why did the sabre-toothed cats go extinct?
Why are most people right-handed?
What is orange juice ‘from concentrate’?
Why does polar bear fur sometimes look yellow or green?
Did American football derive from rugby?
Why does cling film cling?
What were the Salem witch trials?
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