Nasa: Earth is warming at a pace 'unprecedented in 1,000 years', page-9

'But Nasa said that records of temperature that go back far further, taken via analysis of ice cores and sediments, suggest that the warming of recent decades is out of step with any period over the past millennium.'

Population growth is out of step with any period over the past millennium too. Must be a correlation there somewhere. Must be human body temperature raising the ambient temperatures.