A “nanobubble” system which harnesses solar energy to improve water quality is being used to clean up the canals of Mexico City’s Xochimilco ecological zone. Officials in Mexico City have been focused on cleaning up the polluted waters of Xochimilco, a UNESCO World Heritage Site and one of the few areas of the capital that still boasts canal networks dating back to Aztec times. A … Continue reading Mexico City’s Aztec-era canals get the clean-up treatment using solar energy