Policymakers, scientists, delegates, advocates, and people living with HIV/AIDS meet in Washington for the largest International AIDS conference.
The XIX International AIDS Conference
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A woman looks out over the AIDS Memorial Quilt, which is now in its 25th year, on the National Mall in Washington July 24, 2012.
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People walk in the AIDS March in Washington, July 22, 2012.
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Sir Elton John speaks at conference, July 23, 2012, in Washington.
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Muppets Bert and Ernie, as well as Elmo, center, are among a donation of additional Jim Henson objects to the Smithsonian's National Museum of American History in Washington.