One billion. That's the number of hungry people worldwide. The effects are heartbreaking. Solutions are needed now to feed future generations.

In this series, the UN 's three food agencies – FAO, WFP and IFAD – take us around the globe in search of answers to some of the most pressing questions we face today.

Farmers in Croatia use nuclear technology to tackle the Mediterranean fruit fly pest. In Ghana, investing in local entrepreneurs creates employment and a market for cassava producers. Food is distributed to thousands affected by recent attacks in South Sudan's Jonglei State.