Chuluun Togtokh calls for a change to the UN's current human development index, which "celebrates gas-guzzling developed nations".

Cities are vulnerable to climate change but can adapt with policymaking informed by sound science says Cynthia Rosenweig and colleagues.

The challenge for Latin American and Caribbean governments is to combine an approach to development with low-carbon emissions, says Omar Vidal.

Understanding how carbon dioxide impacts food quality is vital to tackle malnutrition effectively, says agricultural researcher Lewis Ziska.

Developing countries need ‘green’ development, not emission cuts, to fight climate change, say B. Sudhakara Reddy and Gaudenz B. Assenza.

Simply reducing livestock farming in developing countries will neither cut emissions nor benefit the poor, says livestock expert Carlos Seré.

India should offer to make its national action plans part of a global climate deal in Copenhagen negotiations, says Rajendra K. Pachauri.

Rich nations should set an example at Copenhagen by committing to emissions reductions of 40 per cent, says Chinese scientist Jiahua Pan.

To get the best for and from Africa, REDD negotiators must hear African viewpoints, says head of the African Forest Forum, Godwin Kowero.

Without knowing REDD's true costs we can't analyse the benefits, says the ASB Partnership for the Tropical Forest Margins' Peter A. Minang.

South Asian countries must be rewarded for afforestation, reforestation and carbon stock growth, say N. H. Ravindranath and Shamama Afreen.

Reducing deforestation is crucial to mitigate climate change, but it mustn't be used as an excuse to continue polluting, says Roman Czebiniak of Greenpeace.

Forests are valuable assets, and reduced emissions from deforestation and degradation (REDD) should be prioritised, says Virgilio M. Viana.

Climate negotiations must promote capacity building, not impose quotas, argues ZhongXiang Zhang.

China can reduce carbon emissions — and the cost of fighting climate change — by storing carbon in farmland soil, says Jiang Gaoming.

Emissions from China's export industry are everyone's responsibility — future trade and climate policy must be linked, says Glen Peters.

Small island developing states should set an example by promoting a clean energy environment, says Tom Roper.

Training tree fellers in forest management can cut tree damage and carbon emissions from degradation, argue Francis E. Putz and colleagues.

The time is right for Europe to change its carbon trading rules, giving Africa access to the market, writes Louis V. Verchot.

Biofuel production offers a lifeline to sugar-producing countries hit by the European Union's 2006 sugar reforms, argues Maureen Wilson.