Take, for instance, quantum entanglement – the idea that two objects can become so entwined that changes to one can instantly affect the other, no matter how far apart they are. This has been regularly proven to be possible with atoms and molecules, but now scientists have managed to demonstrate it on a much larger scale, which is beginning to cross over into our everyday world.

Although entanglement was implied by his own calculations of quantum mechanics, Albert Einstein famously recoiled from the idea, insisting that there must be another hidden explanation that didn't require resorting to "spooky action at a distance." About 80 years on, though, quantum entanglement has been experimentally observed time and time again, and forms the foundation for emerging technologies like quantum computing, encryption and teleportation.