Water today is undervalued, misused and misallocated. Too many of us take it for granted - we turn on the tap and it flows. But did you know only 4% of Earth’s water is freshwater and only 0.5% of that is safe for human consumption? As shocks of drought and deluge unleash their devastation, water has forced itself to center stage. It demands that we change fundamentally; it asks that we value it profoundly.

In Food or Fuel, the second episode of the Future Food series, Kenyan Farmer and campaigner, Moses Shaha is cynical about ‘biofuels’, energy extracted from crop plants. He journeys through southern Kenya where farmers are starting to grow jatropha, to understand if this biofuel crop is a threat to farmland and food security as he fears, or whether growing energy crops can inspire innovation and help the environment long-term.

Note: A series of 6 x 25-min films exploring key questions around global food security