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What do 64-year-old swimmer Diana Nyad and 13-year-old entrepreneur Maya Penn have in common? At the TEDWomen conference in San Francisco, a range of speakers shared the ways innovation and ingenuity kept them young.

California-based Moon Express just unveiled the design for a small robot spacecraft about the size of a coffee table that it says could move about the moon's surface powered only by solar panels and hydrogen peroxide.

When doctors stick electrodes into the brain of a patient with epilepsy, they're hoping to find a cure for debilitating seizures. But they're also exploring a still-mysterious landscape. And they couldn't do it without a patient willing to help.

Since 2001, more than 100,000 troops have left the military with an other-than-honorable discharge. The "bad paper" puts benefits and medical care out of reach, even for those who served in combat. Which raises a simple question: What does America owe those who serve?

David Greene talks with Sylvain Groulx, head of mission for Doctors without Borders in the Central African Republic, about the state of the violence there and the hopes for peace now that French troops have arrived.

Eight tech giants — including Google, Apple and Facebook — have written an open letter to the president and Congress warning that current government surveillance practices are undermining freedom. This follows leaks showing tech firms were part of widespread NSA surveillance programs of email and phone records.

Children's voices, slashing grain, making tea and a call to prayer — all sounds of an American living in Senegal.

Historian Maureen Ogle's new book examines the rise of our modern industrial meat system by examining its roots — all the way back to Colonial America. There's a fundamental disconnect, she argues, in our demands for both cheap, plentiful meat and an end to factory farms. Something, she says, has to give.

Taken together, retired baseball managers Joe Torre, Tony La Russa and Bobby Cox won eight World Series titles and 7,558 games. Their names appeared on all of the voters' ballots Sunday.

Delays in processing blood screening samples for newborns could be putting millions of infants at risk for disabilities or even death. Guest host Celeste Headlee talks with Ellen Gabler of the Milwaukee Journal Sentinel, who investigated the screening track records of hospitals around the country.