Maria Dominguez picks Gala apples in an orchard in Wapato, Wash., in 2007. Shannon Dininny/AP hide caption

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President Clinton and Democratic gubernatorial candidate and California Attorney General Jerry Brown wave to students at a rally in Los Angeles on Oct. 15. Clinton is as much of an asset to Democratic candidates as President Obama, and in some cases, more so. Kevork Djansezian/Getty Images hide caption

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Republican senatorial candidate Dino Rossi talks to supporters at his campaign office in Everett, Wash., on Tuesday. Rossi is challenging Democratic Sen. Patty Murray for her seat. Ted S. Warren/AP hide caption

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Technology to filter photos in Web searches may help the Justice Department curb online trafficking in child pornography. The department has thus far focused its efforts on prosecution, not prevention. hide caption

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Devon Energy Corp.'s steam generation plant uses steam-assisted gravity drainage to extract bitumen from oil sands near Conklin, Alberta, on June 28. Jimmy Jeong/Bloomberg via Getty Images hide caption

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