Author: Pierre-Marc Rene

How Mexico City slashed air pollution levels by half

Mexico’s capital used to be the most polluted city in the world. But this is how it turned its fortune around

Red alerts, curfews and health crises resulting from air too hazardous to breathe – for those who lived in Mexico City in the 80s and 90s, its recent pollution problems are all too familiar. Back then, lead, ozone, carbon and sulphur were so rife in the atmosphere that residents claimed they were causing birds to fall out of the sky. The city authorities…Read More