Talk of the Nation

Traffic cameras that snap pictures of cars running red lights or speeding are used in 661 cities around the U.S. NPR's Corey Dade explains that while local governments argue they make driving safer, some motorists believe the cameras are nothing more than revenue generators.

Journalist Marie Colvin, of Britain's Sunday Times, was killed in Syria Wednesday — along with French photographer Remi Ochlik. NPR's Neal Conan remembers the foreign journalist who joined Talk of the Nation several times, reporting from Gaza and Libya.

In the documentary If A Tree Falls, director Marshall Curry tells the story of the rise and fall of the Earth Liberation Front, a group that the FBI once described as America's number one domestic terrorism threat. The film has been nominated for an Academy Award.

The visit of Chinese Vice President and heir apparent Xi Jingping to the United States, raised questions about internal Chinese politics — from human rights to technological development — and how the country will be governed in the future.

Virginia state legislators passed a bill requiring women to receive an ultrasound — which is conducted via transvaginal probe in the first 12 weeks of pregnancy — before having an abortion. Dahlia Lithwick, senior editor for Slate magazine, calls the proposed law "an abomination."

Americans have tended to save more and spend less in the years since the economic downturn in 2008. But according to a survey from BankRate.com, only 54 percent of Americans have more emergency savings than credit card debt.

NPR's Neal Conan reads from listener comments on previous show topics including the concept of "black cool," Jeremy Lin and "Linsanity," and which country's constitution Egypt should use as an example.

Photojournalist Danfung Dennis has captured the brutalities of the wars in Iraq and Afghanistan for major publications, including The New York Times, Time magazine, The Guardian and The Washington Post.

Inspired by these experiences, Dennis embedded with the U.S. Marines Echo Company in Afghanistan and created the documentary Hell And Back Again.

Stories about life on Native American reservations often focus on the hardships — alcoholism, drugs, violence and poverty. In Rez Life: An Indian's Journey Through Reservation Life, Ojibwe writer David Treuer strives to capture stories about the beauty of life on Indian reservations.

While Western officials believe Iran is seeking to enrich uranium for a nuclear weapon, Iran's leaders contend it is for peaceful purposes only. NPR's Mike Shuster discusses Iran's regional, diplomatic and nuclear goals.