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Can a paper helmet protect cyclists' heads?
The idea that paper can provide more protection than polystyrene is crazy, or is it?
This fascinating video from the BBC explains how a honeycomb arrangement of cardboard cells provides better protection than conventional polystyrene helmets. Apparently half a million cycle trips are made each day in London alone, to improve safety it is essential to wear a well-fitting helmet.
Most helmets are made from polystyrene, but Dr Ayan Panja has discovered how humble sheets of paper - arranged in an ingenious way - can offer even more protection.