Air Pollution: The World's Biggest Environmental Health Risk

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  • What's in the Air?
  • International Crisis
  • Regions Hit the Hardest
  • Damaging Our Health
  • The Most Vulnerable
  • Disproportionate Effects
  • Unequal Exposure
  • City Air
  • A Call to Action
  • The Causes
  • A Threat to Children
  • Strategies and Solutions
  • Next Steps

Regions Hit the Hardest

In 2012, low- and middle-income countries in the Southeast Asia and Western Pacific regions experienced the biggest air pollution-related burden. A total of 3.3 million deaths were attributed to indoor air pollution, while 2.6 million deaths were attributed to outdoor air pollution. 

(Photo: Lintao Zhang/Getty Images)

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