Micro algae plants with vertical tanks of 12 meters high are being used for depollution purposes on Earth. These tanks are connected to the chimney of a big cement plant, capturing the emitted CO2 and converting it into oxygen through the process of photosynthesis. The workers at the cement plant, as well as the vehicles used for transportation, are contributing to the reduction of CO2 emissions. This innovative solution not only helps in improving air quality but also demonstrates the potential of micro algae plants in tackling pollution in various industries.