Rio+20 must launch SDGs to guide countries through complex development challenges, argues Colombian ministry official Paula Caballero Gómez.

Next month's meeting in Brazil needs send the right signals to encourage progress on sustainability, says ODI's Claire Melamed.

World leaders must promote effective land use methods to mitigate drought, says Luc Gnacadja of the UN Convention to Combat Desertification.

Peter Messerli and colleagues argue that reforms in agricultural policy will be needed to build green economies in the developing world.

Improving access to information technology can help communities assess their own vulnerability and boost local planning, says John Waugh.

Africa must make sure its grassroots innovations can benefit from a new global green technology support mechanism, argues Linda Nordling.

Agro-ecology offers simple solutions and can align climate change with food security agendas, says UN adviser Olivier De Schutter.

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

Analysing vulnerability to climate change must go beyond stating obvious problems to become truly useful, argues Marcus Moench.

Nuclear power is no magic solution, argues Pervez Hoodbhoy — it's not safe, or cheap, and it leads to weapons programmes.

A new southern African climate plan is impressive, but needs more funding if it is to plug the continent's data gap, writes Linda Nordling.

A conflict between climate adaptation and food security policies shows we must create the right conditions for change, says Blessings Chinsinga.

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

Coping with climate change requires a greater understanding of the options for water storage, writes hydrology expert Matthew McCartney.

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

Africa has woken up to the promise of 'climate cash' — but the skills needed to secure it remain thin on the ground, writes Linda Nordling.

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.

Soil science and agroforestry can help tackle climate change and boost crop yields, say M. S. Swaminathan and Dennis Garrity.