Talk of the Nation

We spend a lot of time sleeping (roughly one-third of our lives, according to the National Institutes of Health). But how much downtime do our brains really need? Experts discuss the links between sleep, memory and cognition, and why our sleep patterns change as we age.

John Brennan, the CIA director nominee, faces questions about the use of drone strikes and torture during his confirmation hearings. In particular, questions will focus on how the U.S. justifies targeted killings in countries where we're not engaged in warfare.

When electorates in Colorado and Washington State voted to legalize recreational marijuana, they thrust their states into uncharted territories. While it's one thing to say pot is legal, it's another to set up regulatory, law enforcement and business practices that work for the industry.

NPR's Political Junkie Ken Rudin discuss the week in politics from Ed Koch's passing to Ashley Judd's political future. John Collegio, communications director for American Crossroads, discusses the group's new campaign to beat far right candidates in Republican primaries.

The Supreme Court is expected to rule on two cases involving detector dogs and the limits of reasonable search and seizure. Surrounding the cases are larger questions about the effectiveness of detector dogs and the legal questions that arise when they are used for law enforcement.

Transcript

NEAL CONAN, HOST:

Elizabeth and Phillip Jennings, two kids, split level in the Virginia suburbs. They're on a travel agency and drive a big boxy Oldsmobile - a typical American family in Ronald Reagan's America, except for their other job as Soviet spies.

Last Wednesday night, when "The Americans" debuted on FX, an FBI agent moved in next door, which prompted Phillip, played Matthew Rhys, to suggests to Kerri Russell's Elizabeth it might be a good time to defect.

(SOUNDBITE OF TV SHOW, "THE AMERICANS")

The Pew Hispanic Center estimates that there are millions of people living in mixed-immigration-status families in the U.S. Immigration attorney Kamal Essaheb and Center for Public Integrity reporter Susan Ferriss discuss the challenges these families face.

In the debate on gun control, self-protection and the protection of others are commonly cited justifications for gun ownership. NPR's Neal Conan talks with guests about what happens when a person draws a gun on another individual.

From Iranian President Mahmoud Ahmadinejad's visit to Cairo, to the ongoing violence in Syria, Rami Khouri, columnist for Beirut's Daily Star recaps developments in the Middle East and reflects on lessons learned two years after the Arab Spring.