Four South African innovations have made it on to this year's list of 10 nominees for the Innovation Prize for Africa. Its aim is to encourage local solutions to challenges and inspire continued growth on the continent. The winner will be announced in a ceremony in June in Botswana.
Run by PhD candidate Kenalemang Kgoroeadira, Thojane Organic Farm combines traditional African knowledge with modern permaculture techniques to produce retail-worthy organic produce and a sustainable source of income.
When one thinks of farming, butterflies are not the first commodity that comes to mind. But in Tanzania, this unlikely crop is cultivated to help conserve threatened forests and provide an alternative income to more than 250 farmers.
• First World Forestry Congress for SA
The Australian government plans to unlock Africa's great food production potential by providing African farming communities with technical and scientific support and expertise, through the establishment of a new food security centre.
• Community's future in berry farming