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Growing food and stopping floods with rain gardens

Small urban ‘rain gardens’ are popping up all around Australia and Indonesia to keep waterways free from pollutants, stop flooding and erosion, and to grow food.

Although they may look similar to a normal garden, beneath the surface rain gardens are a sandwich of layers of sand, gravel, roots and microbes through which polluted water passes and clean water exits, which can then be used for irrigation or washing.

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