CNN: They look like something from a science fiction film: the industrial monoliths from “Blade Runner,” or perhaps the Martian pods in “War of the Worlds.” But in reality, these giant towers loom over the skyline of Delhi, in India, and land with benevolent intentions. “The Smog Project,” designed by Dubai-based architecture firm Znera Space, is an ambitious proposal to clean the air in one of the world’s most-polluted cities. Delhi’s citizens are on the frontlines of a smog crisis. During a particularly bad spell in late 2017, the quality of air was so poor that breathing it was equivalent to smoking 44 cigarettes a day.
World Health Organization data shows Indian cities dominate the top 20 most-polluted cities globally in terms of PM2.5 levels — atmospheric particles less than 0.0025mm (0.000098 inches) wide, the smallest and most dangerous size of airborne pollution.