Jacques Barzun, one of the most influential historians, educators and thinkers of the 20th century, died Thursday, just one month shy of his 105th birthday. Barzun seemed to have a limitless capacity to understand and translate complex ideas — about the evolution of Western culture, what it means to be free, and even the value of American baseball. He shared his observations in numerous books and magazine articles and at Columbia University, where he held forth for half a century.

More than a year after popular protests rocked the Arab world, U.S. intelligence officials are struggling to understand the myriad of Islamist groups that have filled the vacuum.

Those groups run the gamut from moderate believers who are willing to give the political process a try to violent extremists. The difficulty is figuring out which is which.

If you've ever found yourself anxiously wondering where a hurricane might make landfall, then you're probably familiar with "spaghetti charts" — the intertwined web of possible storm tracks put out by many forecasters.

Those lines represent hundreds of millions of observations from satellites, aircraft, balloons and buoys, all crunched from complex forecasting equations on some of the world's most powerful computers.

The U.S. economy remains in a gray area, so it's no wonder that the presidential race is essentially tied.

Gross domestic product grew at a 2 percent annual rate between June and September, according to figures out Friday. The White House says this means the economy has been growing for 13 straight quarters.

As the election draws closer, the economy and jobs remain top issues in the presidential race.

President Obama points to the improvement in the labor market since he took office in the midst of a downward spiral.

Both he and Republican presidential nominee Mitt Romney have five-point plans for improving the economy, although their strategies differ.

An explosive report from the New York Times today spelled out just how wealthy the relatives of Chinese prime minister Wen Jiabao are. Try $2.7 billion dollars in assets. This startling news so angered Chinese officials that the Times' website was quickly shut down in China.

Now comes the debate over the debates. No matter who "won" or "lost," it's clear that there has been momentum building toward Mitt Romney since he first debated President Obama early this month in Denver. Plus, a look at the competitive Senate races. And the comment by Indiana Republican Richard Mourdock about rape, pregnancy and God has put a GOP Senate seat in jeopardy.

Join NPR's Ron Elving and Ken Rudin for this week's political roundup.

"World's Most Powerful Laser Beams To Zap Nuclear Waste."

That Bloomberg Businessweek headline got our attention. We were imagining the explosion that might result.

But as it turns out, the zapping "could destroy nuclear waste and provide new cancer treatments," according to the story.