Desertec, an ambitious solar power project in the Middle East and Africa, should be more transparent and participatory, argues Athar Osama.

The hydrological ecosystem services of Amazonian forests must be valued, says conservation biologist Carlos Peres.

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

Policymakers must find flexible plans to ensure water security despite the uncertainties of climate change, says climate scientist Mark New.

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

Five climate experts offer their views on how best to reform the Intergovernmental Panel on Climate Change (IPCC).

The publication of false claims by the IPCC has been compounded by its imperious attitude, says professor of climate change Mike Hulme.

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.

Governments need to regain control over their agriculture to combat climate change, says commodities specialist Peter Baker.

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

IPCC chair R. K. Pachauri calls on journalists to maintain focus on the scientific rationale for action in their coverage of climate change.

Rising temperatures, which promote algal blooms and the spread of pathogens, are setting a new agenda for microbiologists, says Bernard Dixon.

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

Voluntary collaboration between governments and international organisations can be an effective way to address global scientific issues, says Michael Williams.

Climate-change reporting is woefully inadequate because too often editors lack interest and assign writers without expertise, says James Fahn.

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

Bjørn Lomborg says that global warming will not have a severe impact on human welfare. But Anthony McMichael argues that his views are ignorant and naïve.