It's a new form of power that could become a valuable source of renewable energy. Thames Water is investing £250m in a plant that will process human waste.
There's no shortage of supply and, if it works, the plant in Oxford will generate enough electricty to supply 37,000 homes. Kate Bunkall takes up the story.
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Friday morning's forecast for the east of the region
Friday morning's forecast for the west of the region
Kind-hearted families have raised thousands for a vital heart machine at Southampton General Hospital. We've been hearing their stories