As an ancient land with rich cultures and diverse terrains, India has some of the fastest-growing cities in the world. But, not all the urban areas of the country have a comfortable and livable environment.

The thick, contaminated air covering many Indian cities is a daily reality for millions. In some places, the sun is barely visible, and breathing feels unsafe. A new report has revealed that 13 of the world’s 20 most polluted cities are in India,