Negotiations at the UN climate summit have resumed after developing countries had earlier withdrawn their co-operation from the talks in Copenhagen.

Delegates were angry at what they saw as moves by the Danish host government to sideline talks on more emission cuts under the Kyoto Protocol.

The G77-China bloc said the organisers had been "undemocratic", accusing them of advancing rich nations' interests.

Rich nations have promoted the idea of a new agreement, replacing Kyoto.

Industry has struggled to sway UN climate talks in Copenhagen because of a remote negotiating process and a lobby split between climate policy winners and losers, executives said on Friday (11 December).

UN talks in Copenhagen are meant to agree the outline of a new treaty, including sharp cuts in carbon emissions, at a forum which does not involve business directly.

Senior executives met at a separate location several miles from the 7-18 December UN talks, and accepted that the business lobby was split on climate action which could disadvantage energy-intensive sectors including cement and power generation.

Denmark may be breaching European law, Danish human rights groups claimed tonight as they called for their government to launch an immediate inquiry after police in Copenhagen used controversial kettling and mass preventative arrest tactics for the third day running.

Following the arrest of 68 people on Friday, and 958 yesterday on Saturday, police today arrested 257 demonstrators, "kettling" a section of a march near Osterport station, and as they had done on Saturday, cuffed the protesters and put them onto buses transporting them to a detention centre.

As the COP15 climate change summit in Copenhagen carries on into its second week, accounts were emerging of the treatment of the detainees on Saturday night - 945 of them had been released by this morning, with just 13 remaining in custody.

The European Union has probably lost at least €5bn (£4.5bn) to VAT fraud related to carbon trading and there is a risk that the criminals will now shift their attention to Europe's electricity and gas markets, according to Europol.

The news will cause further embarrassment for European governments negotiating at the Copenhagen climate summit and trying to persuade other parts of the world to sign up to carbon trading as a way of reducing emissions.

The Guardian recently revealed that the Danish government had been forced, on the eve of the Copenhagen summit, to rush through an emergency law making it impossible for criminal gangs to reclaim huge amounts of VAT on fraudulent trades they were making on Europe's various carbon exchanges.

Reporting from Copenhagen - International negotiators are quietly making progress here on steps to reduce "stealth" pollutants that contribute to climate change, including soot, refrigerants and methane gas, which together account for nearly as much greenhouse gas pollution as carbon dioxide.

Carbon dioxide, of course, is the poster gas for global warming. Disagreements over how to reduce its emission from cars, factories and power plants have dominated the Copenhagen climate talks so far.

But carbon dioxide accounts for only half the world's greenhouse gas emissions. And while top leaders postured and negotiated over a host of issues related to carbon emissions in the first week of the summit here, behind the scenes diplomats have worked toward compromises on a few simple strategies to reduce the other pollutants that cause global warming.

Those sources include so-called black carbon, soot from incompletely burned fossil fuels and biomass, including that produced by ships and cooking stoves that collects in the atmosphere and on ice and prevents sunlight from being reflected back into space; hydrofluorocarbon chemicals, known as HFCs, used in refrigerators and air conditioners worldwide; and methane, which emanates from coal mines and landfills.

Many scientists and environmentalists say reducing the "forgotten 50%" of pollutants will be faster, easier and substantially cheaper than cutting carbon dioxide, and could buy the world time in its climate clock race.

The restriction was announced today outside the Copenhagen conference center after several thousand accredited NGO conference delegates, including three from the National Center for Public Policy Research, waited outside for eight hours or longer in 32-degree F temperatures for admission.

NGOs apparently are being banned because the United Nations accredited 45,000 people for a building with a capacity of 15,000, although the stated reason was "security concerns." The "security concerns" may be related to the fact that, after waiting several hours in the cold, delegations began to chant, "Let us in! Let us in!"

"To be an 'accredited' or 'admitted' NGO to a COP conference, NGOs must apply months in advance, and typically only make travel plans to attend after receiving complete credentials from the United Nations," said Amy Ridenour, president of the National Center for Public Policy Research, an accredited COP-15 NGO organization that is as of now banned from the conference. "To give credentials to 45,000 people while choosing a building that holds 15,000 people is insane, although the United Nations, to be fair, has never been known for competence."

Maybe the UN should revoke the accreditation of 2/3 of the world's population, thereby solving the problem of overpopulation.

En un viejo país ineficiente, algo así como España entre dos guerras civiles, poseer una casa y poca hacienda y memoria ninguna. -- Gil de Biedma