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Dr. James Maskalyk went to contested border town in Sudan with Doctors Without Borders. He treated patients and fended off a measles epidemic with limited resources. His six-month stint affected him more than he expected.

Airs Monday, Oct. 1, 2012 at 9 p.m. & Tuesday, Oct. 2 at 9 p.m. on KPBS TV

Industry demand for the "sustainable seafood" label, issued by the Marine Stewardship Council, is increasing. But some environmentalists fear fisheries are being certified despite evidence showing that the fish population is in trouble — or when there's not enough information to know the impact on the oceans.

Pilgrims Still Progressing

Virginia Thomas, wife of Supreme Court Justice Clarence Thomas, has formed a new group to promote the ideals of the Tea Party movement. Although Thomas has often worked for conservative causes, her new role is raising questions about potential conflicts of interest for her husband.

Social networking has almost doubled among people older than 50 in the past year, with 42 percent of seniors participating in the hot Internet trend. Using Facebook and other sites, seniors build support networks that help them begin a second career, prepare for retirement or deal with health issues, a Pew report finds.

The Marine commander assigned to set up Guantanamo Bay Detention Center says the United State “lost the moral high ground” with its brutal treatment of prisoners there.

"If true, individuals who were in a position to monitor and act upon learning of potential abuses appear to have been acting starkly contrary to the values of higher education, as well as the NCAA," association President Mark Emmert says.

The San Diego Master Chorale is presenting an evening of Latin American and Spanish music with the classical guitar talents of the Romero Duo, tenor Enrique Toral, and pianist Bryan Verhoye. We'll get a taste of those performances here in our These Days studios.

Every step we take, every move we make, somebody's watching us. If Greta Garbo — the iconic movie star who famously wanted to be left alone — were around today, she might be a prime customer of the online privacy industry.