In early August, the Mars rover named Curiosity is slated to enter the Martian atmosphere. It will travel 13,200 miles per hour and then stop within seven minutes for a landing on the planet's surface. Diane and her guests talk about their hopes and fears for the mission to Mars.
President Obama has made national security an area of strength during his presidency. But Mitt Romney planned to use a speech to the Veterans of Foreign Wars on Tuesday to chip away at that advantage, hammering Obama on looming defense cuts and for alleged leaks from the White House.
Among those on Mitt Romney's list of potential running mates, Rep. Paul Ryan of Wisconsin has youth and experience. He's a conservative from a swing state, and he has big ideas and the policy chops to back them up. But the House Budget Committee chairman's fiscal ideas might cost Romney with independents.
The Republican candidate, a man with a lot of domestic policy experience, is now trying to demonstrate his proficiency with international affairs. Aides stress that the journey to the U.K., Israel and Poland will include little in the way of political attacks or policy announcements.
The Second Amendment remains off limits for many politicians, with even those favoring gun control unlikely to bring it up in an election year. But long-term shifts in U.S. demographics and culture could lead to changes in the gun-rights versus gun control debate in coming decades.
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