Since this topic has subsided from public view, a priesthood incorporating James Maynard, Andrew Granville, Terry Tao, has been assiduousy shaving Zhang's original 70 million, and refining and simplifying the proof to the point where a normal mathematically-inclined human (if such an entity exists) might possibly be able to follow it with the assistance of a powerful computer and a sabbatical year or two --- by which time it would no doubt have undergone further drastic improvement. The current result asserts that there are infinitely many consecutive prime pairs with difference h for some h <= 600 . The result generalises to finite arithmetic progressions of m consecutive primes with span h , for which instead h <= exp(8m + 5) . For those with time to spare and robust self-esteem, there is (considerably) more detail available at http://terrytao.wordpress.com/2013/11/19/polymath8b-bounded-intervals-with-m... Fred Lunnon