With a declining population and dwindling tax base, Detroit has grappled with severe financial problems in the past decade. J.D. Pooley/Getty Images hide caption

itoggle caption J.D. Pooley/Getty Images

Mushers can bring up to 20 dogs to the Iditarod but can start the race with only 16. In the days before the competition, the animals are taken to the Iditarod headquarters in Wasilla, Alaska, for pre-race exams. Russell Lewis/NPR hide caption

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American Electric Power's natural gas-burning plant in Dresden, Ohio, is one of the energy company's new investments in alternatives to coal-burning plants. Michael Williamson/The Washington Post/Getty Images hide caption

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That's a light saber, sir, not a phaser. (President Obama in September 2009, during a White House event promoting Chicago's bid for the 2016 Summer Olympics.) Roger L. Wollenberg /UPI /Landov hide caption

itoggle caption Roger L. Wollenberg /UPI /Landov

President Obama speaks to reporters Friday at the White House after he met with congressional leaders regarding the sequester. "Even with these cuts in place, folks all across this country will work hard to make sure that we keep the recovery going," said Obama. "But Washington sure isn't making it easy." Charles Dharapak/AP hide caption

itoggle caption Charles Dharapak/AP