Rachel Brazil talks to the scientists trying to uncover their secrets It was back in 1962 that DNA circles were first ... high-throughput automated method to purify extrachromosomal circle DNA ready ...

A man wanted in connection with two serious assaults in Newport has been arrested in Essex. Ryan Twardun, 32, was arrested by Telford officers in Chelmsford on Saturday. A 34-year-old man has also ...