From the discarded shells of shrimp, researchers have drawn a material capable of dismantling one of agriculture's most persistent chemical legacies. A team has engineered a magnetic hydrogel composite that breaks down diazinon pesticide with 98.7% efficiency — outpacing conventional methods by a wide margin — and can be recovered and reused across ten cycles without losing its power. The work, still in its laboratory phase, points toward a future where water remediation draws not from industrial synthesis alone, but from the quiet resourcefulness of natural byproducts.