Coway Airmega Halo Review: Is Your Air Really Clean?
Coway's new Airmega Halo runs quietly and clears visible smoke quickly, but its air-quality readings weren't always reassuring.
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Latest on Air-quality
Newest firstAsbestos 'nearly everywhere' after 9/11 - new documents reveal air-quality concerns
Officials at the time assured the public the air was safe after the attacks, but the documents suggest there were concerns.
Industrials
With the largest industrial IPO since 1999, this air-quality giant is going public
Madison Air raises $2.2 billion in the largest IPO this year, and the largest from the industrial sector since 1999.
