Many developing countries have been arguing for a "twin track" approach, whereby countries with existing targets under the Kyoto Protocol (all developed nations except the US) stay under that umbrella, with the US and major developing economies making their carbon pledges under a new protocol.

BBC: Copenhagen climate summit negotiations 'suspended'

Sweden, France, Germany and the UK are just about on track to achieve the 8 percent reduction to which the EU committed itself in the Protocol.

CNN: Kyoto: The next generation

Everywhere there are TVs with split screens showing the two tracks of negotiations: one track for everyone, and the other for those who signed up to the Kyoto Protocol 12 years ago.

BBC: Harrabin's Notes: Inside Copenhagen

An attributional accounting protocol that relies on facilities-level GHG balances to report net CO2 uptake and track otherwise unregulated GHG emissions throughout fuel and feedstock supply chains.

FORBES: Rethinking Life-Cycle Fuel Regulations

Mobile phone companies are now required to register all SIM cards and allocate unique internet protocol addresses to all the phones on their networks, to make it easier to track down culprits.

BBC: Kenya cracks down on hate speech ahead of poll