
The Times generated much discussion and controversy by making public the “valued-added” rankings of L.A. teachers. The coverage played into a national debate about teacher performance. Third-graders at Morningside Elementary in San Fernando, above, listen to teacher Zenaida Tan. Contrary to popular belief, the best teachers weren’t concentrated in the most affluent neighborhoods.
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2010: The Year in Pictures (Irfan Khan / Los Angeles Times)

The massive natural gas pipeline explosion in San Bruno leveled a Bay Area neighborhood and left lingering questions about the safety of the rest of California’s gas pipe system.
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2010: The Year in Pictures (Don Bartletti / Los Angeles Times)

It was a turning point in the tight race for California governor: Meg Whitman’s former maid coming forward to say she was undocumented. The revelation left Whitman’s campaign in turmoil and sent her poll numbers falling. Above, Nicky Diaz Santillan breaks down during a press conference at attorney Gloria Allred’s office.
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2010: The Year in Pictures (Irfan Khan / Los Angeles Times)
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The discovery of the remains of two babies wrapped in newspapers from the 1930s in the basement of an L.A. apartment started an intriguing mystery. Above, LAPD Dets. Jose Robledo, left, and Hector Madrigal outside of the Westlake apartment building where the mummified babies were found.
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2010: The Year in Pictures (Mel Melcon / Los Angeles Times)

The LAPD arrested a suspect in one of L.A.’s most prolific serial killing cases. There was controversy about whether the suspect could have been identified earlier. Above, an age progression of mug shots showing suspect Lonnie David Franklin Jr. In December, police released 180 images of women found in possession of the suspect.
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2010: The Year in Pictures (Gary Friedman / Los Angeles Times)

The shooting death of veteran Hollywood publicist Ronni Chasen was one of L.A.’s great mysteries of the year. And some are skeptical of the solution offered by police.
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2010: The Year in Pictures (Al Seib / Los Angeles Times)

If any state would legalize marijuana, it would be California. But in the end, voters just said no -- to the surprise of some who assumed California would make history.
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2010: The Year in Pictures (Brian van der Brug / Los Angeles Times)
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In U.S. politics, 2010 was a Republican year. But not in California, where the Democrats continued to dominate. It’s another example of how the state is different. Above, Jerry Brown and his wife, Anne Gust, celebrate his victory over Meg Whitman for governor.
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2010: The Year in Pictures (Robert Gauthier / Los Angeles Times)