National and World News from NPR

The Justice Department is warning Apple and five big publishers that it may sue them for colluding to increase the price of electronic books.

The Wall Street Journal, which first reported the story, explains that Justice's concerns emerged as Apple released its first iPad. Essentially, the paper explains, they were afraid that Apple would do to them what it did to the recording industry, which is tie them to prices set by Apple.

The U.S. Surgeon General today issued the first report on youth smoking since 1994. And the findings aren't encouraging.

Surgeon General Regina Benjamin calls tobacco use a "pediatric epidemic." The nation's war on smoking hinges on preventing young people from taking up the habit in the first place, she says.

She talked about the problem and possible solutions with All Things Considered host Melissa Block.

At the Museum of the Olympic Games in Olympia, Greece, lush pine trees and olive groves are filled with chirping birds. The one guard at the site looks nervously at the few visitors.

There is still a sense of shock in Olympia following the theft last month at the museum, when armed robbers broke into the building and tied up the single guard on duty.

Archaeologist Kostantinos Antonopoulos says they ran off with 77 priceless objects, including votive figurines, chariots and horses.

Last night a bewildering debate broke out on CNN's Piers Morgan Tonight over video posted online yesterday of a young Barack Obama speaking at a student protest at Harvard Law School more than two decades ago.

The debate focused on whether the new BuzzFeed website or Breitbart.com deserved credit for the scoop.

My bewilderment stemmed from the question of why anyone would consider this video to be a scoop at all.

Cancer may be even more complicated than everybody already thought. And that's why a single tissue sample taken from a single tumor may not be the best way to figure out a course of treatment.

British researchers took multiple samples within kidney tumors (before and after drug treatment) and also got samples from tumors that had spread from the original cancers in four patients.

They performed all kinds of genetic tests, including detailed DNA sequencing, on the cancers and found wide variations in some key traits.

Iran's supreme religious leader Ayatollah Ali Khamenei said he welcomed President Obama's comments that attempted to cool off tensions between the West and Iran.

The Christian Science Monitor calls it an "unprecedented praise."