Elephants eat grass at the Hluhluwe game reserve on the outskirts of Hluhluwe, South Africa. Schalk van Zuydam/AP hide caption
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NASA's New Horizons spacecraft returned images, such as this one, to improve maps of different regions of Pluto. NASA/JHUAPL/SwRI hide caption
Tuesday
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Republican presidential candidates (from left) Carly Fiorina, Chris Christie, Ted Cruz, Jeb Bush and Donald Trump interact onstage at the end of the Republican Presidential Debate on Dec. 15. Robyn Beck/AFP/Getty Images hide caption
Friday
Octavius Humphries, 32, (left) Seth Smiley, 51, and Seth's mom, Carole Smiley, 81, visited StoryCorps in Atlanta. StoryCorps hide caption
Wednesday
The national Christmas tree stands in Cathedral Square in Vilnius, Lithuania. Mindaugas Kulbis/AP hide caption
Tuesday
Onlookers come to admire the self-proclaimed "Miracle on 34th Street" in the Baltimore neighborhood of Hampden. But not every country has as much electricity as America does. Patrick Semansky/AP hide caption
In this composite image, the sun has reached its northernmost point in Earth's sky, marking a season change and the first solstice of the year 2004. NASA/ESA hide caption
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A trade card from the 1880s depicts a Santa Claus figure in a bird-themed sleigh pulled by reindeer as they are about the land on a rooftop to deliver presents from the huge sack of gifts. Getty Images hide caption
Friday
Akiva Johnson and Henry Jimenez, on a recent visit with StoryCorps. StoryCorps hide caption
Thursday
A reporter holds images of possible Republican candidates back in February. Since then, the GOP field has narrowed slightly, but still boasts 14 contenders. Carolyn Kaster/AP hide caption