Necessity, so the old saying goes, is the mother of invention, and few stories illustrate that truth more vividly than that of a young Kenyan innovator named Joseph Nguthiru. What began as a frustrating encounter with the choking waters of Lake Naivasha in 2021 eventually blossomed into a remarkable scientific breakthrough with the potential to transform environmental conservation across Africa and beyond. Water hyacinth is among the world’s mos…
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