Sceptics in the UK and the US have moved to capitalise on a series of hacked emails (aka climategate) from climate change scientists at the University of East Anglia, claiming they show attempts to hide information that does not support the case for human activity causing rising temperatures. But tonight the UK prime minister, Gordon Brown, his environment secretary, Ed Miliband, and Ed Markey, the man who co-authored the US climate change bill, joined forces to condemn the sceptics.