He cleaned a lagoon… with bubbles Meet Marino Morikawa, a Peruvian nanoscientist. When his father called to say the lagoon of his childhood—El Cascajo—had become a dump, Marino left his lab in Japan and flew home. Using ultra-fine nanobubbles (≈50–100 nm) made with hardware-store parts, he built a natural, chemical-free system that traps pollutants and bacteria: Inject nanobubbles into the water As they rise slowly, their ionic charge attracts contaminants Biofilters with nati...