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Felix Baumgartner plans to ride a balloon to an altitude of 34 miles over New Mexico and then he'll step out into the void. He'll be wearing a pressurized suit like an astronaut, and expects to break the sound barrier as he falls. He's being advised by a former NASA flight surgeon who lost his wife in a shuttle crash, and who wants to improve astronauts' odds of surviving a future disaster.

High food prices have often been cited as a factor behind mass protest movements. But a group of researchers say food prices can actually be used to predict when social unrest will occur. And according to their mathematical modeling, we've hit the threshold for more waves of riots.

The channel says a naming convention will make it easier to communicate with the public about the storms.

Republican lawmakers want more information on the lead-up to the attack that killed an American ambassador.

Under pressure from economic sanctions, Iran's currency is tumbling. It has lost about 25 percent of its value in the past week. Two years ago, the rial traded at 10,000 to the dollar. Now, it's trading around 35,500 to the dollar.

In another demonstration of how different the partisan lenses are through which voters view the political landscape, a new poll finds most Democrats dismiss the notion of pollster bias in surveys showing President Obama ahead of Mitt Romney. Republicans, by and large, believe it.

Melissa Block profiles several of the newly announced 2012 MacArthur Fellows. In this segment she speaks with Laura Poitras, a documentarian who is making a trilogy of films about the post-Sept. 11 world.

Georgian President Mikheil Saakashvili has conceded defeat in parliamentary elections in the former Soviet republic, clearing the way for the opposition Georgian Dream party to form a new government. The country's new ruling party says it will continue a pro-Western stance but also seek to restore ties with Russia.

In this year's presidential election, more than 1 out of every 10 eligible voters is Hispanic, and Hispanic political clout is growing. But while Spanish-language ad spending by the campaigns is eight times what was spent in 2008, that spending has been focused mainly on just seven media markets.

Judges in these cases have declined to rule on the constitutionality of the laws. Instead, they have signaled the laws would withstand scrutiny if states can ensure that the vast majority of voters have easier access to free IDs. Legal scholars agree that many of these measures could be enacted after Election Day.