by How It Works Team · 10/12/2012
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Why doesn’t a spider get stuck in its own web?
How loud would stars be if space was full of air?
Why do trees produce sap?
Will we use hyperloops to commute in the future?
What is used to colour stained-glass windows?
Could vaccinations have stopped the spread of plague in medieval times?
Why weren’t ships made of metal sooner?
Have we discovered all the land on Earth?
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