NPR's business news starts with a spike in gas prices.
Gasoline prices jumped 18 cents over the last couple of weeks. That's the biggest increase so far this year. The Lundberg Survey shows that heading into the weekend, the national average price of a gallon of self-serve was $3.69. Now, analysts say the spike is in part because of some refinery and pipeline issues around the country.
Researchers used economic principles to predict which countries would win the most medals at the London Olympic Games. The study was 95 percent accurate for the 2008 games. And this time around, it was 97.7 percent accurate.
For more on this big weekend in politics, we turn to Cokie Roberts for some analysis. Good morning.
COKIE ROBERTS, BYLINE: Hi, Renee.
MONTAGNE: So we just heard in Ari's piece the excitement Paul Ryan is generating among the Republican faithful. Is that partly why Mitt Romney chose him as his running mate, to generate some of the kind of enthusiasm that has been missing from his own campaign?
Egypt's first freely elected president made history there Sunday by confronting the military power structure. Mohammed Morsi forced top military leaders into retirement and shifted the balance of power to the civilian government. Analysts called it the boldest and most unexpected move of Morsi's fledgling presidency. NPR's Leila Fadel has the story from Cairo.
Over the weekend, GOP presidential hopeful Mitt Romney named Wisconsin Rep. Paul Ryan as his running mate. David Greene talks to Ryan Lizza, a reporter for The New Yorker, who recently profiled Ryan for the magazine.
When it comes to a healthy diet — especially for women, and especially after menopause — nutritionists, doctors, everybody it seems, will tell you: calcium, calcium, calcium.
Federal health officials recommend that women and men younger than 50 consume 1,000 milligrams of calcium per day. The recommendation goes up to 1,200 milligrams after age 70 for men and after menopause for women, when a major drop in estrogen causes bone loss.