Friday

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Arizona state Sen. Russell Pearce speaks in April during a vote on SB 1070, the immigration bill he sponsored. The final version resembled "model legislation" he helped draft during an ALEC conference in Washington, D.C., last year. Ross D. Franklin/AP hide caption

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Thursday

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Mark Meckler, national coordinator for the Tea Party Patriots, wears a Tea Party pin at a July 21 news conference on Capitol Hill. After the elections, Meckler says, the movement with "really find its stride." Alex Brandon/AP hide caption

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Arizona state Sen. Russell Pearce, pictured here at Tea Party rally on Oct. 22, was instrumental in drafting the state's immigration law. He also sits on a American Legislative Exchange Council (ALEC) task force, a group that helped shape the law. Joshua Lott/Getty Images hide caption

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Wednesday

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Democratic candidate for governor Jerry Brown (R) speaks as Gov. Arnold Schwarzenegger (C) Republican gubernatorial candidate Meg  Whitman (2nd-L) look on during a discussion moderated by NBC's Matt Lauer (L) during the Women's Conference 2010 in Long Beach. Kevork Djansezian/Getty Images hide caption

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Tuesday

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Last month in Des Moines, Iowa, President Obama held a backyard discussion on the economy. With unemployment near 10 percent, the president and his fellow Democrats have had trouble touting positive economic news -- like the lower-than-expected TARP bill. Rodney White/AP/The Des Moines Register hide caption

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Friday

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A customer displays his ration card as he waits to buy food at a government store in Havana in 2009. The Cuban government has slowly been chipping away at the rations system — and more changes appear to be coming, worrying many Cubans. Javier Galeano/AP hide caption

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Wednesday

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Abu Adel, originally from Nassariya in southern Iraq, has lived in Kirkuk since the 1980s. He says plainclothed men have harassed him, demanding his papers and asking why he hasn't left Kirkuk. Arabs like Abu Adel, lured north in the 1980s with promises of housing and jobs, are now under intense pressure to move back as Kurds repopulate the area. Peter Kenyon/NPR hide caption

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Tuesday

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Scientists exposed the brains of specially engineered lab mice to pulses of light and saw brain cells responding as if they were triggered by an odor. The research could be applied to diseases including Alzheimer's and Parkinson's. Eric Isselee/iStockphoto.com hide caption

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Monday

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Former Enron CEO Kenneth Lay stands outside the U.S. courthouse in Houston after the close of his bank fraud trial in May 2006. Two Stanford University researchers say that lying CEOs tend to use a lot of words that express positive emotion to overcompensate. Dave Einsel/Getty Images hide caption

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