Researchers are studying the ability of beneficial micro-organisms - or probiotics - to treat a range of conditions from eczema to inflammatory bowel disease. And the idea that "good" bacteria are healthy for us is gaining traction.
Syrian activist Karam Nachar is pursuing a doctorate in Middle Eastern history at Princeton. His family is working on several fronts against the Syrian regime. His father, who has been jailed previously, helped form the Syrian National Council, an organization of dissidents.
The Nachar family has long been on the radar of the Syrian government, and since last year, they have become even more visible.
When Syrians first started openly protesting inside the country in the spring of 2011, 29-year-old Syrian Karam Nachar was working on his doctorate in Middle East history at Princeton University. He joined demonstrations outside U.N. headquarters in New York.
There are two big factors that will determine the outcome of the presidential election: the economy and demographics.
The economy is weak and doesn't look likely to improve by much, but the makeup of the electorate on the other hand is highly dynamic. It continues a trend underway for years: a rapid rise in the number of people who are not Anglos in both the population and at the polls.
That percentage actually doubled between 1992 and 2008, says Alan Abramowitz, a political scientist at Emory University.
The first openly gay congressman is now the first sitting congressman to be in a same-sex marriage. Democratic Rep. Barney Frank married his longtime partner, James Ready, in a ceremony officiated by Massachusetts Gov. Deval L. Patrick on Saturday.
The setting was low-key — a Marriott hotel in suburban Boston — and the ceremony lasted less than five minutes. Attendees including Rep. Nancy Pelosi and Sen. John Kerry lent suitable gravitas.
Collapsing to the ground, Switzerland's Roger Federer rolled right back up with a look of joy Sunday as he took in his record-tying seventh title at the All England Club. He beat Britain's Andy Murray 4-6, 7-5, 6-3, 6-4 in a match that electrified fans and came close to giving the U.K. its first Wimbledon men's singles title since 1936.
And let's turn from political to science. Researchers discovered what looks to be the elusive Higgs boson. It's a subatomic particle they've spent nearly 50 years searching for. So, this was special vindication for their efforts, and special vindication for one of the scientists who's been searching for the particle - a man named Gordy Kane. Kane won $100 in a bet with Stephen Hawking, arguably the world's smartest person alive today. Hawking admitted defeat on the BBC.
And let's talk about the presidential campaign with Mara Liasson, NPR's national political correspondent. Mara, good morning.
MARA LIASSON, BYLINE: Good morning, David.
GREENE: So, we just heard in Cheryl's piece that the NAACP is meeting. They're going to hear from Mitt Romney. They're going to hear from Vice President Joe Biden. They are not expected to hear from President Obama. What do you make of him sitting this one out?