In the middle of South Africa's worst drought on record, a 16-year-old boiled orange peels, added avocado skins and left the mix out in the sun — her polymer beat the industrial water-absorber 76.1% to 74.7% at roughly a fiftieth of the price per tonne, and Google's grand prize followed
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A teenager's kitchen experiment with fruit waste outperformed industrial polymers and caught the attention of Google, offering hope to farmers watching their fields wither in Africa's worst drought in over a century.
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