President Obama (from left), French President Francois Hollande and Microsoft co-founder Bill Gates applaud a speech during the Mission Innovation event at the UN conference on climate change Monday in Paris. Jim Watson/AFP/Getty Images hide caption

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Planned Parenthood Federation of America President Cecile Richards listens while testifying during a Sept. 29 House panel hearing on "Planned Parenthood's Taxpayer Funding." Jacquelyn Martin/AP hide caption

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President Obama and French President Francois Hollande place flowers at the Bataclan, site of one of the Paris terrorists attacks. Obama is in Paris for a climate-change conference. Evan Vucci/AP hide caption

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William Porter, one of six Baltimore city police officers charged in connection to the death of Freddie Gray, arrives at a courthouse for jury selection in his trial on Monday in Baltimore. Rob Carr/AP hide caption

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President Obama (center) and Secretary of State John Kerry (right) attend Monday's opening ceremony of the United Nations Climate Change Conference in the Paris suburb of Le Bourget. Thibault Camus/AP hide caption

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A power-generating windmill turbine is seen in front of the Arc de Triomphe on the Champs Elysees avenue in Paris ahead of the COP21 World Climate Summit, which begins Monday. Christian Hartmann/Reuters /Landov hide caption

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Rosa Parks, whose refusal to give up her seat touched off the Montgomery bus boycott and the beginning of the civil rights movement, is fingerprinted by police Lt. D.H. Lackey in Montgomery, Ala., Feb. 22, 1956, when she was among several others charged with violating segregation laws. Gene Herrick/AP hide caption

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Delegates from about 170 countries gathered in Kyoto in December 1997 during the United Nations Framework Convention on Climate Change. This year in Paris, the stakes are even higher, negotiators say. AFP/Getty Images hide caption

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After a magnitude-4.5 earthquake was recorded near Cushing in October, Oklahoma regulators ordered oil companies to shut down several disposal wells. That seemed to slow the shaking — at least for a while. Joe Wertz/StateImpact Oklahoma hide caption

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Los Angeles is a sprawling metropolis, and it was poised to become a manufacturing giant because of its unique geography. John Francis Peters for NPR & Shereen Marisol Meraji/NPR hide caption

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From the Scenic Seward Highway in the Chugach National Forest, Alaska to the streets of Washington, D.C. — this year's Capitol Christmas Tree made quite a journey. Carol M. Highsmith/Buyenlarge/Getty Images hide caption

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Rosa Parks joins in a march at the South African Embassy in Washington, Dec. 10, 1984, protesting that country's racial policies. She's famous for refusing to give up her seat on a bus in 1955, sparking the Montgomery boycotts — but her activism spanned her entire life. AP hide caption

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