Talk of the Nation

A growing field of medical research aims to pinpoint exactly why pets can make us happier and healthier. Some studies show that animal interaction can increase a person's level of oxytocin, a hormone associated with love and trust. And the animals also benefit from positive human interaction.

Syndicated radio host Rush Limbaugh called a Georgetown student a "prostitute" and a "slut" after she testified before a Senate committee and called for federal health care coverage to include the cost of contraception. Limbaugh apologized, but it has prompted a re-examination of the term, "slut."

After the recent controversy over birth control, health coverage and the Catholic Church, writer Soraya Chemaly declared: "I'm No Longer a Catholic. Why Are You?" in a piece for The Huffington Post. Chemaly explains what made her walk away from the church.

Popular movements during the Arab Spring paved the way for democratic elections in Egypt and Tunisia. In Egypt, Islamists are assuming powerful roles. Many women's rights activists fear that a shift toward democratically-elected Islamist rulers will limit personal and political freedom for women.

On stage, Teller, half of the magician team of Penn & Teller, rarely says a word.

But now he's talking, explaining how magicians harness scientific research on deception to trick audiences into falling for their illusions. And their work, in turn, makes them interesting to brain researchers.