Bruce Doddridge, scientist at NASA Langley Research Center, presents “Aerosols &amp; Atmospheric Composition” on the NASA Hyperwall at the U.S. Center at the 19th Session of the Conference of the Parties to the UN Framework Convention on Climate Change (COP19) in Warsaw, Poland, on November 18, 2013. [State Department photo/ Public Domain]
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<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/statephotos/10946046653/">NASA's Doddridge Presents "Aerosols and Atmospheric Composition"</a>