The sun rises over the Singapore Central Business District as smog shrouds the city-state on Thursday.
June 20, 2013 The choking haze that's enveloped the city state is being caused by brush fires in Indonesia, and Singapore's premier says it could last for weeks.
January 15, 2013 Pollution around Beijing has been stifling for the past few days. NASA has released a pair of satellite images, showing the extent of the smog from space and how the air has changed in the past couple weeks.
September 2, 2011 The president says "reducing regulatory burdens and regulatory uncertainty, particularly as our economy continues to recover" prompted his administration to rethink.
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