reporter: tatjana von bormann pays regular visits to the garbage dumps around cape town.he has studied the wasteful lifestyle of many south africans and says change is urgently needed. every year, ththe visserhok landfill alonene receives thousasands of tons of food was. it comes from restaurants, factories, and local farms. tatjana: we estimate that a third of food is dumped in south africa every year. this has significant ecological impacts becaususe all that fod has compounded water and energy, and from a climate change perspective, in the landfill it emits harmful greenhnhouse gas, both methane and carbon dioxide. in south africa, up to 12 million people don't know where their next meal is coming from, and yet we're wasting 10 million tons of food every year. reporter: rudolf roscher has spent years looking at ways of reducing food waste here in the western cape. he works for the regional department of agriculture. von bormann has come to visit one of his projects, which she believes could provide a model for the rest of the country. roscher has managed to persuade fa