Climate scientists are reeling from the discovery that someone has hacked into the email archive of one of their most prestigious research centres, the Climate Research Unit (CRU) of the University of East Anglia, UK, custodian of the most respected global temperature record. Climate sceptics have gleefully blogged that the emails, now widely published on the internet, reveal extensive data manipulation and expose a conspiracy behind global warming research. An analysis by New Scientist finds scant evidence of data abuse, but does show persistent efforts to suppress work by climate sceptics.