World leaders recently met in Mexico to discuss the pressing problems of pollution and global warming. They discussed the rising levels of the sea due to the melting polar ice caps but hey also try to look for common grounds on how we can address the very air that we breathe.
Around the world, people in big, heavily populated and polluted cities get sick and die of lung diseases. The rates are alarming add to the equation the increasing number of children being born with defects and the high statistics for cancer and heart ailments.
These cities are growing fast. But the real question is at what price? And can we really call it progress? Several studies conducted in the past years have pointed to the cities with the worst air condition: