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 native microorganisms trap and break them down—no chemicals, no disruption to the ecosystem

Results:

✔️ In 13 months, the water was drinkable again

✔️ In 3 years, migratory birds returned

Today, Marino’s mission:

💧 Ultra-effective, low-cost decontamination with zero chemicals

🌍 Active projects at Lake Titicaca and desert oases affected by wastewater from 1.5M+ people

🌱 100 ecosystems restored by 2030, in partnership with local communities

This is deep climate tech in action: simple physics, local biology, real impact.

Would you deploy this in your city? 

Credit Ecomedy for the story

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