The late philosopher, anthropologist and environmentalist Gregory Bateson wanted to change the way we think, attending less to things in themselves and more to the connections between them. We hear to his daughter Nora Bateson, whose new documentary "An Ecology of Mind" offers her perspective on her father's work. Then, how stories and characters get in the heads of authors and actors. We're joined by Rivera Sun Cook, who plays all 30 roles in her new dramatic trilogy, "A Star Called Love."

Thirty years ago, human happiness seemed like a pretty unserious subject for scientific study. These days positive psychology, as happiness research is known, is de rigeur. Oscar-nominated filmmaker Roko Belic ("Genghis Blues") explores the science of contentment in his latest doc, "Happy." Belic traveled to five continents, talking to researchers, comparing the state of satisfaction in various countries and finding some very jolly people. Does happiness depend on our material conditions? Just how much control do we have over our own sense of well-being? And whence the intellectual prejudice that happiness lacks gravitas?

Documentary filmmaker David Hoffman lost nearly everything he owned—including his huge film and art archive—in the fire that destroyed his home in 2008. But he was determined to salvage something from the ashes. A new documentary, Everything Which is… Yes, shows what he lost and what he found. I spoke to David Hoffman and the film's director, John Vincent Barrett.

Ordinary matter is so 20th century. In recent decades, scientists have found that the vast bulk of the universe (95-96 percent) consists of some as-yet-unidentified thingums known as "dark matter" and "dark energy." Astrophysicist Rocky Kolb explains what we know and don't know about these mystery ingredients. Then science writer Richard Panek describes the sometimes bumpy road to their discovery.

While criminal rehabilitation seems to have fallen out of favor in much of America's penal system, San Francisco's Resolve to Stop the Violence Project (RSVP) is bucking the trend. RSVP aims to reform violent felons in SF's county jails, and the program appears to be working. In this broadcast, originally from 2009, we spoke to RSVP founder Sunny Schwartz (author of "Dreams from the Monster Factory") and to Ramon Garcia, who participated in the program, first as an inmate and later as a teacher.

Lieutenant Colonel Jason Armagost of the US Air Force fired some of the opening shots of the Iraq War as he piloted a B2 bomber over Baghdad. He's also a writer and serious reader, who carried a small library of classic fiction, essays and poetry with him on that flight. He talks with us about his experiences, about his role in the war and how literature helps him make sense of it all.

How life may have begun on Earth, with a little help from outer space. I talk to biochemist and astrobiologist Dave Deamer about the hypothetical origins of life. Also, attempts to conjure life in the lab, and music from DNA.

The writer Carolyn Burke joins us to pay tribute to France's quintessential songstress. Carolyn's new biography "No Regrets: The Life of of Edith Piaf," sheds new light on both the artist and her art. Carolyn and I discussed Piaf while listening to some classic recordings.

Jasmin Darznik emigrated to the US from Iran when she was three and grew up knowing little about her Iranian family history. After her father's death, her mother began to story. She dictated a series of cassette tapes for Jasmin, illuminating her own extraordinary life and the lives of many Iranian women over the last half-century. We discuss Jasmin's book "The Good Daughter: A Memoir of My Mother's Hidden Life."

Cosmologist Anthony Aguirre discusses the new, more complicated view of the universe described by the latest theories. The universe may be bigger, older and far stranger than previously thought. We discuss multiverses, eternal inflation, space-time wormholes and more.