Changes

[[Image:Teller_Card_100dpi.jpg|600px|center|thumb| Global Warming Petition]]

[[Image:Teller_Card_100dpi.jpg|600px|center|thumb| Global Warming Petition]]

However, Boykoff (2007) argues that ''"In the case of anthropogenic climate change, there is a

In rebuttal, Boykoff (2007) argues that ''"In the case of anthropogenic climate change, there is a

remarkably high level of scientific consensus"'' <ref>Boykoff (2007) 'Climate change and journalistic norms: A case-study of

remarkably high level of scientific consensus"'' <ref>Boykoff (2007) 'Climate change and journalistic norms: A case-study of

US mass-media coverage' Geoforum, 38; pp. 1190 - 1204</ref>

US mass-media coverage' Geoforum, 38; pp. 1190 - 1204</ref>

Boykoff argues that the mass media has played a significant part in framing global warming as a contentious issue amongst scientists when in fact there is a high level of consensus. In reality, the mainstream media is a driver for global warming and Boykoff has a vested interest, grants. Though, he argues that the media's concept of 'balanced' reporting leads to arguments for and against being given equal weight in a story when this is not in fact the case in reality.<ref>Boykoff (2007) 'From convergence to contention: United States mass media representations of anthropogenic climate change science' Transactions of the Institute of British Geographers, 32; pp. 477 - 489</ref> It is well understood that most media companies do not offer balanced reporting. Most politicians now accept this consensus, for example see Barack Obama's and John McCain's views below.

Boykoff argues that the mass media has played a significant part in framing global warming as a contentious issue amongst scientists when in fact there is a high level of consensus. In reality, the mainstream media is a driver for global warming and Boykoff has a vested interest, grants. Though, he argues that the media's concept of 'balanced' reporting leads to arguments for and against being given equal weight in a story when this is not in fact the case in reality.<ref>Boykoff (2007) 'From convergence to contention: United States mass media representations of anthropogenic climate change science' Transactions of the Institute of British Geographers, 32; pp. 477 - 489</ref> It is well understood that most media companies do not offer balanced reporting. Many politicians have bought into this consensus, for example see Barack Obama's views below.

==Natural Variability of the Climate System==

==Natural Variability of the Climate System==