Milwaukee is a city on water, right on the shore of Lake Michigan, split by the historic Milwaukee River. How did all that water shape the city's history, politics, culture, and people? We went on a roadtrip (and boat trip) looking for answers. Then we did a live show at Milwaukee's historic Turner Hall, talking with journalists, brewmasters, historians, comedians, spiritual leaders and one awesome DJ to get at some big underlying questions.

Guests:

John Gurda, Dan Egan, Jenny Kehl, Chastity Washington, Ben Barbera, Russ Klisch, David Dupee, Tarik Moody, Siobhan Marks, Venice Williams, Kim Blaeser, Melanie Ariens

Look around the political landscape and you see something we haven’t seen for decades — politicians proudly identifying as socialists.

In New York, Alexandria Ocasio-Cortez came out of nowhere to steamroll an incumbent and seize the national stage. Bernie Sanders is leading the early crop of Democratic presidential hopefuls. And for the first time in a long time, membership in the Democratic Socialists of America is surging.

What used to be political poison is now catnip for a new generation of voters. So, are we living in a socialist moment?

Guests:

Cheryl Blue, Andrew Haug, Erik Olin Wright, Bhaskar Sunkara, Sean Wilentz, Brother Ali

Shuttered businesses line the familiar streets of producer Charles Monroe-Kane’s hometown in the Rust Belt in northeastern Ohio. The steel mill where his father worked is shut down, locked behind chains. Opioid abuse is rampant, poverty is high, jobs are scarce. But people remain. What keeps them going? What do they hope for? Charles went back to talk with friends, family and community members in a journey to the Center of the World, Ohio.

We leave the lives of Ohioans to travel back in time into the lives of Koreans in Japan with Min Jin Lee. Then we head to Brooklyn (well, "Another Brooklyn") with Jacqueline Woodson.

Guests:

They say "don't feed the trolls" — but why do they get to own the web? Was it built for them, or for all of us? We look at who built the internet, how it became an at times toxic space for women, and how we might build online spaces that are more inclusive to all.

Guests:

Claire Evans, Zoë Quinn, Roxane Gay, Sara Wachter-Boettcher, Emily Temple-Wood

Whether you know it or not, your closets are filled with personal information. About your identity, your values, your personality. And every day, you wear it all right out the door for the whole world to see.

Do you think about what are you saying with your clothes?

Guests:

Angelo Bautista, Avery Trufelman, Carolyn Smith, agnès b., Jo Paoletti

Why is the world so damn cynical? Rather than surrendering to corrosive, hopeless snark, we look to some unexpected sources — video games, the lives lead by those who leave hate groups, and the optimism of the Afrofuturist art and culture movement — to make the case for sincerity.

Guests:

Jason Rohrer, Christy Wampole, Christian Picciolini, Ingrid LaFleur

Debates over immigration are raging all over the world, but sometimes it’s hard to sort out the political posturing from the actual problems. Should we be doing things differently? In a highly connected world, does the idea of a national border even make sense anymore?

Guests:

Mariela Shaker, Wolfgang Munchau, Molly Crabapple, Parag Khanna, Jose Angel N, Sunjeev Sahota

Sometimes, we take our body for granted. But even the everyday things it can do – keep our heart beating, fight off illness – are pretty extraordinary. Do you know what your body can do?

We explore a kidney transplant, a chronic illness and a common fever, and find the mystery and the familiar in the anatomy of ourselves.

Guests:

Josh Mezrich, Missy Makinia, Porochista Khakpour, Gavin Francis

It creeps into everything from exercise to pore size, from diet to personal finance, from relationships to parenting style: guilt that we're not good enough, fit enough, smart enough. And as we peruse Instagram, all we see is the perfection of others reflecting our own failures back at us. Why do we spend so much time feeling guilty? Should we?

Guests:

Devorah Baum, Lucas Mann, Thomas Curran , Stephen Greenblatt, Susan Bandes

Human creativity — whether it’s solving a tough problem or writing a novel — is one of our defining traits. It’s also deeply mysterious. Where does that creative spark come from?

Guests:

Heather Berlin, Siri Hustvedt, Jim Holt, Mary Sharrat, Nathaniel Mary Quinn