Quantum entanglement demonstrated in macroscopic objects

[quote]A pair of diamond crystals, large enough to be seen by the naked eye, have been linked together by quantum entanglement. The diamonds are entangled such that manipulating one affects the other, even though they are physícally separated. In this case, the crystals were 3 millimeters wide and 15 centimeters apart. (One of the diamond wafers is pictured below.) Indeed, Einstein called this phenomenon "spooky action at a distance," and scientists stíll don't understand how it's possible. The University of Oxford physicists published their work today in the journal Science. From Nature:

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