A machine 17 miles around, worth seven billion dollars! The Large Hadron Collider is the largest atom-smasher ever built – a colossal instrument buried 300 feet underground, spanning two countries, designed to recreate conditions a billionth of a second after the Big Bang. It could be our key to unlocking the secrets of the universe, except for one tiny thing: it's broken. Riley has an exclusive inside view – repairing the final critical component and restarting the greatest scientific adventure since the moon landing.
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