National and World News from NPR

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."

After the terrorist attacks on 9/11, some law enforcement agencies adapted crime mapping tactics into what is known as ethnic mapping. Some Muslims welcome ethnic mapping as a useful approach to preventing terrorism. Others say the surveillance amounts to domestic spying and racial profiling.

Kony 2012 is not your usual viral video. A thirty-minute film by the nonprofit group Invisible Children, it hopes to raise support for the arrest of Joseph Kony, the leader of the Lord's Resistance Army. Freelance reporter Michael Wilkerson fact checks the film and explains the controversy.

The divorce rate among people 50 and older has doubled in the past 20 years, according to research by Bowling Green State University sociologists Susan Brown and I-Fen Lin. Their paper, "The Gray Divorce Revolution," examines the factors driving the trend.