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Koreans have been lining up for hours to sample the food at the Seoul outlet of this American burger chain. A South Korean sociologist looks at the factors behind the frenzy.

A Supreme Court ruling expected Monday could dramatically remake the partisan makeup of the next Congress ahead of the 2016 elections.

Formerly considered useless, or maybe a parasite, the stretch of DNA known as LINE-1 actually plays "a key role" in creating an embryo and embryonic stem cells, research shows.

Psychology tells us that waiting for an experience can boost our happiness, as can talking about the experience afterward. That's one reason food pilgrims seem to be queuing up and Instagramming it.

Scientists have published thousands of studies using immortal cell lines, but in many cases the cells in the experiments have been misidentified or contaminated. The problem could be avoided easily.

As Ethiopia and Eritrea declared peace, long-dead phone lines came alive. People spoke with relatives and strangers. "We will be family," an Eritrean told an Ethiopian who randomly dialed him.

The iPhone went on sale Friday, after much hype. But by Saturday, the long lines were for people who wanted to try the phones, not buy them. Everybody was curious but slow to buy as there were concerns about the carrier; No. 3 AT&T. Sentiments are mixed as to whether it has lived up to its promise.

Rebels fighting the regime of Moammar Gadhafi claim to have taken control of Zawiya, a key coastal city near Tripoli. If true, that could mean Gadhafi's main supply line to Tunisia could be cut off.

KPBS's podcast Port of Entry about the borderlands between Tijuana and San Diego explores the complexities of "life on the line."

Livraria Lello in Porto, Portugal, is arguably among the world's most beautiful bookstores, and visitors line up each day to catch a glimpse inside.