Terry Gross

Nathan Wolfe travels to the viral hot spots of the world, where viruses first jump from animals to humans. The scientist spends his days tracking emerging infectious diseases before they turn into global pandemics.

MacFarlane is best known for creating the animated TV shows Family Guy, American Dad! and The Cleveland Show. But he's also a singer whose new album features songs from the Great American Songbook.

More soldiers are returning from Iraq and Afghanistan with wounds that would have been fatal a decade ago. The injuries have led to advances in combat medicine but have challenged the health care systems meant to help veterans back home. War reporter David Wood talks with Fresh Air about the hurdles facing these troops and their families.

Long before the policy barring gays from serving openly in the military ended, Air Force 1st Lt. Josh Seefried started OutServe, a network of gay troops on Facebook. Seefried and his partner talk about what it's like being a gay couple in the military — and about new challenges facing gay troops.

Jeffrey Eugenides' third novel, The Marriage Plot, charts the lives of three young adults as they finish college, fall in love and navigate the real world after graduating from Brown University in 1982. Eugenides, also a Brown alum, based some of the novel on his own experiences directly after college.

Laura Dern is Amy Jellicoe, a health and beauty executive who returns from a post-meltdown retreat to pick up the pieces of her broken life in the new HBO series Enlightened. Dern and series creator Mike White talk about the tone of the show, and whether it's possible for people to really change.

Businessman Art Pope poured millions of dollars into state legislative campaigns during the 2010 campaign. Republicans went on to win 18 of the 22 campaign seats Pope and his organizations targeted. New Yorker writer Jane Mayer talks about Pope's growing power — and how his money may influence the 2012 presidential election.

What motivates someone to become a terrorist? That's the question former prosecutor Ken Ballen set out to tackle when he traveled to Saudi Arabia and Indonesia to interview more than 100 Islamist extremists. "We've never sat back and said, 'Let's really understand our adversaries,' " he says.

In Boomerang, writer Michael Lewis tells the stories of the countries hit hardest by the 2008 financial crisis. He also profiles some people who bet against European governments and are likely to make millions if and when they default.

Several apostles affiliated with the movement helped organize or spoke at Rick Perry's recent prayer rally. A leading apostle, C. Peter Wagner, talks about the movement and its missions, which include acquiring leadership positions in government, the media, and arts and entertainment.