Guardian: Computer hackers who broke into the Climatic Research Unit (CRU) server at the University of East Anglia had access to its systems for more than a month. The full data – covering 1,000 emails and 3,000 documents in which the most recent document and email is dated 12 November – came to wider notice when a copy was posted on a web server in Russia on 19 November. But a month earlier a BBC weatherman who had expressed doubts about climate change on his blog was sent a sample of …