NASA Aircraft Take to Skies over Houston for Air Pollution Study via NASA http://t.co/vTk8Rjsu2G

NASA Aircraft Take to Skies over Houston for Air Pollution Study via NASA http://t.co/vTk8Rjsu2G

— John Prieto (@prietoj) January 20, 2015

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January 20, 2015 at 04:46PM

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