Toxoplasma gondii is a parasite, seen here in brain tissue, that can alter the behavior of the host. It can make rodents attracted to cats, leaving them vulnerable to getting eaten.

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It took 14 years for stone carvers to create the Mount Rushmore monument, seen here in 1995. Gloria Del Bianco's father, Luigi, led the carving team.

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"We are entering a golden age of journalism," says David Carr of The New York Times. "I look at my backpack ... and it contains more journalistic firepower than the entire newsroom that I walked into 30-40 years ago."

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Bert and Ernie's new boss is now Mel Ming.

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Walter Isaacson's biography of Apple co-founder Steve Jobs was published Monday, less than three weeks after Job's death on Oct. 5.

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Drugs or pills against a background of dollar bills.

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Michael Shannon plays federal agent Nelson Van Alden on the HBO series Boardwalk Empire. "I think inside of Van Alden is a child — that arrested child — that never really got to develop its own identity," he says.

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A.P. Tureaud Jr. (right) talked with Steven Walkley at StoryCorps in New York.

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Colson Whitehead is a 2002 recipient of the MacArthur Fellowship. His writing has also appeared in Salon, The Village Voice, and The New York Times.

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A street vendor sells her wares by the light of a kerosene wick lamp in Lagos, Nigeria. The country claims ownership of one of the world's great energy reserves, but corruption and mismanagement leave Africa's oil giant chronically short of electricity. Businesses and walled residential compounds run costly diesel generators.

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