How has Mexico City tried to reduce air pollution?
- a new building has been covered in a special pigment which when UV light hits, it breaks down air pollutants into less noxious compounds like CO2 and water
- However, this has only been done for one building in the whole city
- cars have also been banned from entering the city one day a week based on their licence plate - they are offered free subway/bus travel instead
- to get around this richer people can buy more cars with different license plate
- people might also not want to use public transport as it can be dangerous
- there is also a bike sharing system (ecobici) where people share bikes to get around the city
- people are sometimes put off because it can be dangerous (esp for women) and there are lots of cars
- there is a cable car system that takes people to and from slums which reduces travel time from 90mins to 20mins
- this reduces air pollution as less cars are on the road