Text appears to be a cut & paste of Slate's article on the topic from May 2013: http://www.slate.com/articles/health_and_science/do_the_math/2013/05/yitang_zha

Text appears to be a cut & paste of Slate's article on the topic from May 2013: http://www.slate.com/articles/health_and_science/do_the_math/2013/05/yitang_zhang_twin_primes_conjecture_a_huge_discovery_about_prime_numbers.single.html http://www.slate.com/articles/health_and_science/do_the_math... (They include a link to Slate at the bottom, but no hint they've cut & pasted the entire text as if it were their own with the new September 24, 2014 publication date.)