Nzambi Matee, a Kenyan engineer and entrepreneur, founded Gjenge Makers to tackle plastic pollution in a groundbreaking way. Her company transforms discarded plastic waste into paving bricks that are 5–7 times stronger than traditional concrete, turning environmental challenges into practical solutions

Using a mix of high-density plastic, sand, and heat, the process produces durable, water-resistant, and lightweight bricks. Fully certified and affordable, these innovations are reshaping construction practices while simultaneously reducing waste, offering a sustainable model for urban development and climate-conscious building projects