For a couple of decades, pollution has become a serious problem on our planet and its consequences are getting bigger. However, citizens of the world have become aware to create a clean and healthy environment. Know what are the cities that have worried about preserving the environment and optimizing their lifestyle.
Calgari, Canada
Located in Alberta, this city has learned to make water use efficiently; Its wastewater treatment center allows purify up to 100 million liters of water per day. As energy, 75% of the city is supplied by renewable energies. To achieve this, Calgari has focused on perfecting and optimizing his consumption, sewerage and recycling systems.