South African scientists are turning to microalgae to tackle the country’s sewage crisis. This innovative, chemical-free method treats wastewater without electricity, removing up to 99% of pollutants. It's a low-cost, eco-friendly solution ideal for failing rural systems, with major benefits for public health and the environment. We spoke with Dr. Yolandi Schoeman, Senior Lecturer in Ecological Engineering at UFS, about its transformative potential.

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