The scientific community should create new intergovernmental organisations that promote innovative science in Africa, says Calestous Juma.

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

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

Developing countries need help with crop surveillance and the development of strains resistant to wheat rust, say agricultural research leaders.

Nigeria must pass a biosafety law so the country's farmers can reap the benefits of GM technology, says Ademola A. Adenle.

With traditional food production under threat from climate change, we should switch from agriculture to cell culture, says Lucía Atehortúa.

Drought-tolerant crops could improve food security — if researchers take downstream adoption challenges seriously, says Travis Lybbert.

Replenishing soil fertility through fertilisers is key to increasing food production in tropical Africa, says Pedro A. Sánchez.

GM production is up, but that doesn't mean Latin Americans like or want it, say Luisa Massarani, Ildeu de Castro Moreira and Ana Maria Vara.

'Appropriate' technologies, no matter where they come from, are the key to improving agriculture, says development expert Sara Delaney.

A transformation of the global agricultural research system is needed to avoid a billion more people going hungry, says Uma Lele.

New biofuels offer a sustainable source of energy but we must consider the ethical and social implications, say Joyce Tait and Banji Oyelaran-Oyeyinka.

World Food Prize winner Gebisa Ejeta argues that, with the right support, Africa can achieve its long-awaited Green Revolution.

Increasing production in mixed crop-livestock systems would improve food security, say M. Herrero and colleagues.

GM crops have been hailed as a 'pro-poor' technology, but the reality is much more complicated, says technology researcher Dominic Glover.

A comprehensive and interconnected global strategy is needed to ensure sustainable food security, say H. Charles J. Godfray and colleagues.

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

Weeding, which causes problems for women in developing countries, can benefit from modern biotechnology, says Jonathan Gressel.

Innovative agricultural technologies can produce crops that meet climate change challenges, says ICRISAT head William Dar.

Six experts, writing in The New York Times, discuss options for ensuring food security in the face of growing populations and climate change.