Using orange and avocado peels, a 16-year-old South African could hold the solution to the country's water woes.
Kiara Nirghin, who is from Johannesburg, has won the Google Science Fair Community Impact Award in the Africa/Middle East region with her entry, "No More Thirsty Crops". She is also one of the 16 global finalists for the annual awards, to be held at the Google headquarters in the US in September.
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