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

Pakistan urgently needs to refine its crop yield forecasting and estimation system to improve food production, says Ibrar ul Hassan Akhtar.

Buruli ulcer could spread as agriculture intensifies in Africa, making prevention research vital, says agro-eco-health expert Rousseau Djouaka.

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

Biopesticides are better and safer than chemical pesticides — policymakers must do more to promote them, says insect ecologist Manuele Tamò.

Durable food security and agricultural growth depend on development strategies with resilience built in from the start, says Gordon Conway.

Feeding South-East Asia's rapidly growing population requires a second Green Revolution, says Crispin Maslog.

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

The proposed Sustainable Development Goals need more focus on health to continue the progress achieved with MDGs, argues Priya Shetty.

Climate change could benefit some Pacific fisheries, but tracking the success of adaptation needs effective monitoring, says Johann Bell.

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

Josette Sheeran, executive director of the UN World Food Programme, argues for programmes that build sustainable food security.

The East Africa famine calls into question the wisdom of investing in early warning systems without improving take-up, writes Linda Nordling.

Success stories show that food crises can be controlled with the right tools and agricultural policies, says Sam Dryden.

We must find a better way of monitoring the impact of food insecurity, argues Derek D. Headey.

The current drought in northern Kenya has deep roots in the current practices of pastoralists that need to be addressed, says conservationist David Western.

Combined strategies are needed to meet the world's rising demands for food without further damage to biodiversity, says Jason Clay.

Assessments of bioenergy must consider the potential benefits for rural development and food security, say Lee R. Lynd and Jeremy Woods.

Past successes, such as the Green Revolution, can inform future priorities in agriculture, say David J. Spielman and Rajul Pandya-Lorch.

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