Are the 2010 food riots in Mozambique and Egypt a warning of more to come? These two documentaries scour the world for promising solutions to a looming food crisis.

By mid-century we will have to grow enough food to feed 3 billion more people. This is a daunting task made all the more difficult by shortages of fresh water and soil erosion - not to mention the uncertain impact of climate change. This two-part mini-series - first broadcast on World Food Day 2009 - sets out to find stories of the farmers who are increasing production without over-taxing their local environment. 'Food for Thought' was accompanied by 13 x 90 seconds public service announcements.