But, to maintain its global first-mover advantage, the report finds, Copenhagen must continue to invest in the low-carbon transition.

FORBES: Copenhagen Shows How Cities Can Become Clean Tech Leaders

So here is one principle for delegates in Poznan to agree on - the carbon market must be turned into gold, not for carbon traders and financiers, but to finance the world's transition to a low carbon, equitable future.

BBC: We need to turn carbon into gold

"The transition to a low carbon economy" is number six - remarkable mainly for the fact that it wasn't there before.

BBC: Fertilizing Scottish growth

Alongside the Bill, ministers will announce plans to exempt energy-intensive industries from additional costs arising from the transition to low-carbon energy.

BBC: Energy Bill and plans to pay firms to cut energy use due

"We are facing an unprecedented challenge in ensuring security of future supply while making the transition to a low carbon generating mix, " he said.

BBC: SSE boss Ian Marchant warns of risk of 'lights going out'

Supporting the automotive industry through the current crisis and steering a clear transition to a low-carbon future will create millions of middle-class jobs that are vital to a strong economy while reinvigorating American technological superiority.

CNN: Commentary: Save automakers to help economy and security

That, however, is not the view taken by other professional advisers and consultants, and as the pace of transition to a low-carbon economy picks up, law firms risk ceding to others the role of trusted adviser.

FORBES: Why Are Law Firms Stalling On Sustainability?

For the UK and other wealthy nations, shale gas cannot be a transition fuel to a low-carbon future.

BBC: Viewpoints: Fracking's risks and benefits