For a year I relied on @BeijingAir to help me know when the air was safe. Thank you for your diligence.
07-10-2013 17:00; PM2.5; 28.0; 84; Moderate (at 24-hour exposure at this level)
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@ScottDRichey That is scary -
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@Streganicha It's not as scary as not knowing. Here's a chart from a few weeks ago.pic.twitter.com/cc6wSuUP8I
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@ScottDRichey Terrifying.
End of conversation
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