Air Pollution as Seen From the Skies
From Mt. Etna to China to the Sahara, these striking satellite images of air pollution are from both natural and man-made causes
- By Sarah Zielinski
- Smithsonian.com, April 20, 2010
(Subir Halder / India Today Group / Getty Images)
India is one of the fastest-growing automobile markets in the world, adding hundreds of thousands of cars to the roads each year. Already in Delhi, vehicle exhaust accounts for 70 percent of the city’s air pollution. Most of the vehicles in use in India use diesel for fuel. Diesel engines can produce high levels of toxic pollutants and fine particles, which can contribute to human health problems, such as cancer and heart disease.