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HewaSafi by two Kenyan Teenagers Wins $100,000 at African Regional Earth...
HewaSafi, a low-cost vehicle emissions filter developed by two Kenyan teenagers using maize waste, coconut shells and algae, has won the Africa regional award in the 2026 edition of The Earth Prize.
The project, created by 17-year-olds Fredrick Njoroge Kariuki and Miron Onsarigo, received $12,500 in funding after being selected...















