Thursday

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The skyscraper best known as the headquarters for U.S. Steel now also houses University of Pittsburgh Medical Center (UPMC), the region's largest employer. In the foreground is the environmentally friendly convention center where the G-20 leaders will meet. Keith Srakocic/AP hide caption

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Keith Srakocic/AP
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Monday

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President Obama is likely to be well received at the annual gathering of world leaders this week for the U.N. General Assembly session. The Obama administration has been making efforts to engage with the U.N. after years of sometimes turbulent relations under the Bush administration. Mark Wilson/Getty Images hide caption

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Mark Wilson/Getty Images
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Thursday

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Shotgun houses in Houston's Third Ward. Shotgun houses were the most popular style of house in the Southern United States from the end of the American Civil War, through to the 1920s. Blake Gordon/Aurora Photos for NPR hide caption

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Blake Gordon/Aurora Photos for NPR
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