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Autofocus cameras hit the stores back in the 1970s, making it dramatically simpler for the average consumer to get a good shot. Later, the digital camera made it possible for just about anyone to process their own pictures at home on a computer. Now comes a camera that could represent another kind of photography revolution: the light field camera. Take the picture, but focus it afterward. Robert Siegel speaks with Lytro founder Ren Ng about the new light field camera that his company is producing.

Cain now holds a big lead over Mitt Romney in a new University of Iowa poll. Rick Perry and Michele Bachmann lag further behind, trailing even Newt Gingrich and Ron Paul.

Gelatins turn liquids into solids, and can make cream-based dishes into a lighter, more flavorful affair by eliminating the need for heavy, flavor-distorting fats, says Spanish-born restaurateur and top chef Jose Andres.

Chicago Mayor Rahm Emanuel recently proposed a $2 fee on weekday parking in downtown public lots and garages to help pay for other transportation improvements like new bus routes and bike lanes. Other cities have had some success with similar plans, but some Chicagoans are skeptical.

As President Obama tours the nation ahead of the 2012 election, he's visiting Democratic and Republican territories alike. Amid a time of big news abroad, the president is continuing to push his jobs bill at home.

Argentine President Cristina Fernandez has kept the legacy of her late husband, former President Nestor Kirchner, alive through her re-election campaign. Pundits say it's all part of a broader Latin American tendency to mythologize dead leaders.

Research suggests that toddlers under 2 don't learn from television — and in fact, TV viewing, even in the background, could harm their development. But what about content on mobile screens? The answer may depend on how you're using them.

The Occupy D.C. movement on K Street is getting itself educated. NPR's Peter Overby checked in this week as they held a teach-in with Harvard Law School's Lawrence Lessig, who said protesters can take their government back from the influence of big donors by forging an alliance with the Tea Party grassroots.

Moammar Gadhafi is dead, NATO will end its military operation in Libya at the end of the month, and all but a handful of U.S. troops will leave Iraq by the end of the year. Weekends on All Things Considered host Guy Raz speaks with James Fallows, national correspondent for The Atlantic, about those stories and others from the past week.

In September 2010, Mohamed Abdullahi Mohamed had a job with the city government in Buffalo. Before the end of the year, he was in Mogadishu, fulfilling an obligation he felt to help change the situation in his homeland.