13-year-old turns peanut shells into pesticide remover, eyes $25k prize
Thirteen-year-old Minnesota student Arika Kundu has designed a method that uses discarded peanut shells to help remove pesticide residues from fresh fruits and vegetables. Her project, called LIGNEX, has made her one of 10 finalists in the 2026 3M Young Scientist Challenge. She will now compete for the $25,000 grand prize with guidance from a 3M scientist.
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