"African policymakers need to steer urbanisation from its current non-sustainable path towards healthier cities that ensure food and nutrition security, decent work and income, and a clean environment for all their citizens, " says the FAO's Modibo Traore.

BBC: Africa: Feeding the rising urban population

They believe the regulatory process needs to be speeded up to ensure that the global food security demands of the next few decades can be met, says the BBC's Tom Heap.

BBC: Cambridge-based scientists develop 'superwheat'

When women are at the table, they help bridge the gap between different groups and ensure that a broader range of issues, from food security to sexual violence, are addressed.

BBC: Viewpoint: What if women ruled the world?