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'String Theory' proposes that the fundamental ingredients of nature are inconceivably tiny strings of energy, whose different modes of vibration underlie everything that happens in the universe.  The theory successfully unites the laws of the large (general relativity) and the laws of the small (quantum mechanics) - breaking a logjam that has frustrated the world's smartest scientists for nearly a century.   If you like to know more, watch "The Elegant Universe - String's the Thing" below:

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