@BeijingAir How about better USA cancer prevention = magnify need for no-brainer policies? http://bit.ly/NationallyLifetimeCancersPetroDieselUSA …pic.twitter.com/GuUJbWxY
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10-15-2012 06:00; PM2.5; 98.0; 170; Unhealthy (at 24-hour exposure at this level)
@BeijingAir How about better USA cancer prevention = magnify need for no-brainer policies? http://bit.ly/NationallyLifetimeCancersPetroDieselUSA …pic.twitter.com/GuUJbWxY
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