Why do happily married couples cheat? Why does the modern egalitarian approach to marriage quash desire? Are the heightened expectations we bring to modern love combined with our pursuit of happiness directly related to infidelity?

New York Times columnist David Brooks explores a life well lived. In this episode he examines happiness and commitments.

Mike Mullen, retired admiral and former Chairman of the Joint Chiefs of Staff, says the national security challenges the new Trump administration will face are plentiful. Mullen gives insight into President-elect Donald Trump’s pick for national security advisor, General Mike Flynn.

To find the path to long life and health, Dan Buettner and his team study the world’s “Blue Zones,” communities whose elders live with vim and vigor to record-setting age.

Most people think that happiness has four sources: the sensory pleasures, material wealth, romantic relationships, and children. But recent research suggests that much of what people think about happiness is wrong.

When Amazon launched, it employed just ten people. Now it’s one of the largest retailers in the world. CEO Jeff Bezos describes what companies need in today’s fast-paced, high tech business environment.

The countdown to Election Day is on, and political analysts are giving their predictions. In this bonus episode, Charlie Cook and Amy Walter of the Cook Political Report weigh in on the outcome for the presidential race and contests in the US House and Senate.

In this episode, Vice President Joe Biden gets personal about his connection to cancer and why he’s fighting to break down the barriers preventing progress in battling the disease.

The economy is a key issue for American voters. In July, more than 80 percent of registered voters polled by the Pew Research Center said the economy was the number one issue, right after terrorism. What's influencing job creation and job loss? General Electric CEO Jeff Immelt, US Secretary of Labor Thomas Perez, and US Senator Mark Warner are featured.

Once the realm of science fiction, smart machines are rapidly becoming part of our world—and these technologies offer amazing potential to improve the way we live.