There is a very interesting article on quantum entanglement on the following website. You must register to see it, but the registration is free. It discuses Aspect's first experiments, Bell's theorem, and subsequent debate, the famous EPR objection paper, and further experiments now going on:-http://www.newscientist.com/article/mg20928011.100-reality-check-closing-the-quantum-loopholes.html?page=3