Ocean Color Tracks Microplastic Accumulation

Researchers using 2002–2022 satellite reflectance data found that waters over the Great Pacific Garbage Patch have brightened in blue and green wavelengths, and lab tests suggest microplastics can increase reflectance — although ship‑based sampling is still needed to prove causation. If confirmed, color changes detectable from space could become a remote‑sensing tool to locate and monitor microplastic hotspots. — If satellites can reliably flag microplastic concentrations, governments and NGOs could use that signal for targeted cleanups, regulation, and international pollution accountability.