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Lew wrote to Congress on Oct. 1, urging a swift raising of the debt limit. "If we have insufficient cash on hand, it would be impossible for the United States of America to meet all of its obligations for the first time in our history," he wrote. Posted on 05/29/2015 - 05:25:31.

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Time-stratified case-crossover design was used to study the transient impact of ozone, PM2.5 and pollen on the acute onset of pediatric asthma. Daily emergency department visits were obtained for children aged 3-17 years with a primary diagnosis of asthma during the warm season (April through September), 2004-2007 (inclusive).

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Concentrations of PM2.5 inside the stations were 30-40% higher at EDB than outside and up to 20% higher at KGX. Concentrations of both NO2 and PM2.5 were highest closer to the platforms, especially those with a higher frequency of diesel services. ... 10.1001/jamanetworkopen.2020.4031 DO - 10.1001/jamanetworkopen.2020.4031 M3 - Article VL - 3 ...

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