Quantum entanglement

[SHallam]

Quantum entanglement, what would be the underlying mechanism to explain how it occurs?

[Clanad]

Briefly stated, what is happening is this: Particles which are arbitrarily far apart seem to be influencing each other, even though according to relativity this means that what seems to be causing an event from one point of view, from another point of view doesn't happen until after the effect being caused. A discussion of causality can be found here:

http://fergusmurray.members.beeb.net/Causality.html