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.

In this episode of Hungry Planet, the crew visits a Working for Food project in Somalia. There, war-weary Somalis gather to collect rubbish in return for payment in food. Then, the crew looks at what causes food price volatility in many parts of the world. Last report is from Ethiopia where pastoralists are trained to watch for warning signs of drought to avert future humanitarian crisis.