Two teenagers from Pennsylvania just solved a problem most engineers ignored. Rohan Kapoor and Jack Reichert created the "Go Green Filter" — a 3D-printed device that attaches to your car's exhaust pipe. It doesn't just reduce emissions. It converts CO2 into oxygen. Using microalgae. The same process plants use — photosynthesis. They built a bio-reactor with water, LED lights, and living algae inside. The algae eat the carbon dioxide from your exhaust... and release clean oxygen back into the air. In testing? It cut emissions by 74%. They didn't wait for funding. Didn't wait for permission.
They 3D-printed the prototype themselves. Now it's being deployed in Indonesia. The cost? Low enough to scale globally. If this works at mass scale, it could reduce billions of tons of carbon annually. Two high school kids just did what billion-dollar companies haven't.