Former NBC CEO Bob Wright lost his wife, Suzanne, to pancreatic cancer earlier this year, and on this episode, he wants to know why so little progress has been made in the last 50 years against a disease with such a high mortality rate.

Bishop Michael Curry is the leader of the Episcopalian church, and as we head into the new year, he's here to tell us how the teachings of Jesus just might help create change.This episode is brought to you by Children International (www.children.org/give).

In 2007, everything changed. At least, that’s according to journalist Tom Friedman, who tells David in this episode how 2007 was the single greatest technological inflection point since the printing press—and how we all missed it.This episode is brought to you by Proper Cloth ( www.propercloth.com/gregory ).

We hear about ISIS all the time - but what is it really like, and how dangerous is it? Journalist Joby Warrick has been covering the Middle East and national security for decades, and in this episode he talks to David about just how we should be dealing with the extremist group.This episode is brought to you by Children’s International ( www.children.org/give ), SockFancy ( www.sockfancy.com/gregory ), and Proper Cloth ( www.propercloth.com/gregory ).

For Thanksgiving, we're revisiting a conversation David had with Patty Stonesifer. She had a successful career at Microsoft, but Stonesifer gave it all up to run a not-for-profit in Washington, D.C.In this episode, she talks to David about how her organization is trying to increase access to food - and how we can do the same around the country.This episode is brought to you by Children’s International, SockFancy, Proper Cloth, and Goedeker’s.

At 24 Winston Churchill was looking for a fight – and he found a war in South Africa. He was captured, escaped, saved a train full of people and became a national hero. David talks to writer and journalist Candice Millard about the adventure that helped make Winston Churchill a world leader.This episode is brought to you by Children’s International, Goedeker’s, and Proper Cloth.

NY Times columnist Nick Kristof spent the past year writing against Trump, but tells David, his side got it wrong - and we should give Trump a chance.This episode is brought to you by Children’s International, Goedeker’s, and Proper Cloth.

When you think of evangelicals in America, you probably picture white, ultraconservative Trump supporters. But Christian writer and political activist Jim Wallis is something completely different -- and he wants you to know that that's not what evangelism is all about.This episode is brought to you by Children’s International and Goedeker’s.

Historian Doris Kearns Goodwin has created intimate portraits of many presidents. Here she and David talk about the state of the 2016 race -- and remembers the time she caught LBJ in a lie.This episode is brought to you by Children’s International, Goedeker’s, and Kabbage.

You may be wondering just how we got here - and Ron Brownstein, senior editor of The Atlantic, is here to explain exactly what’s going on in 2016. And you may be surprised to learn what, according to Ron, actually matters (like wedge issues) and what doesn’t (like the candidates themselves).This episode is brought to you by Kabbage