Quantum physics has never made much sense. Einstein never liked the idea that separated particles could influence each other - ‘spooky action at a distance’ - but a new variation on a famous experiment may have proved its existence once and for all. Nature Video dives into a world where quantum entanglement and quantum superposition seem to defy all laws of common sense.
Find the full paper on the loophole-free Bell inequality violation here: http://www.nature.com/doifinder/10.1038/nature15759
And read the Nature News coverage here: http://www.nature.com/news/quantum-spookiness-passes-toughest-test-yet-1.18255