India, Pakistan blanketed in smog so thick, it's visible from space: See pictures
Pakistan, India and other countries in South Asia are shrouded in a layer of smog that is so thick, it's visible from space.
AP PHOTOS: Thick smog shrouds Asian cities
NEW DELHI -- Thick smog shrouded New Delhi and other cities around South and Southeast Asia as air pollution levels soared ...
NASA's Before and After Photos Show How Smog Has Smothered Delhi and Northern India
A thick layer of smog continues to blanket North India, with recent images from NASA revealling how the air quality has ...
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Eerie photos show the Great Smog of London in 1952, which killed 12,000 people and changed the way the world saw air pollution
The Great Smog of 1952 killed 12,000 people. At the time, people didn't realize how toxic the air was because they were used to the smog. Even today, the tragedy is not particularly well remembered.