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Also: Google cuts 4,000 jobs at Motorola Mobility; most of those killed by earthquakes in Iran are women and children; excessive heat warnings continue in Arizona, California; Obama to announce food aid for drought-stricken farmers.

Also: The Curiosity rover zaps Mars rock with a laser; Pakistan's president orders investigation into blasphemy case against girl with Down's Syndrome; Myanmar's government eases some press restrictions.

Accusers may testify today in first hearing about allegations against the former Penn State assistant football coach. Also: U.N. says 5,000 people have been killed in Syrian violence.

Also: George Zimmerman back in jail; stock futures point higher; Queen Elizabeth's Diamond Jubilee continues.

Also: Republican presidential contenders race toward Super Tuesday; fighting leaves more than 100 dead in Yemen.

After two years as Vice President Dick Cheney's closest aide, Mary Matalin prepares to leave the White House. Matalin, who has a long history in Republican politics says she hopes to spend more time with her family -- including her husband, is Democratic political strategist and TV personality James Carville. NPR's Juan Williams talks with Matalin.

It's one of the cancers highlighted in a new report that looks at the growing number of cases worldwide.

The National Academy of Sciences has toughened up its guidelines to call cutting corners, dubious statistics and not fully sharing research methods "detrimental" to science.

The governor, lieutenant governor and attorney general of Virginia continue to resist calls to resign after two of them admitted to appearing in blackface, and one faces accusations of sexual assault.

City leaders in Youngstown, Ohio, are hoping that by leasing land to drilling companies, they might generate funds to demolish vacant homes and buildings. Some refer to this as "frackmolishing," and opponents worry the drilling will cause environmental damage.