Quantum Entanglement, a term first coined by Erwin Schrodinger in 1935, is a phenomenon where a strong correlation exists between two particles, regardless of the distance between them. For example, if two particles are entangled, a measurement on one particle simultaneously affects the other particle irrespective of the distance between the two particles. You can separate them as far as you like -- in theory these particles could be at opposite ends of the universe -- and a change in one will instantly be reflected in the other. On the trail of this odd "faster than light" property, physicists at the University of Vienna have provided the most complete experimental proof that the quantum world really does work in strange ways, in conflict with our everyday experience and intuition.