Clear+Vivid with Alan Alda - Season 25 trailer

We exist because of the moon. Rebecca Boyle relates the amazing story of how the moon, born of a cataclysmic collision with an infant earth, has shaped our history, our evolution, and even our very existence.

Her new book tracks the momentous events of the 1960s when her husband, Dick Goodwin, worked closely with both JFK and LBJ, and Doris worked with LBJ, as the two very different presidents shaped the future.

Alan and Executive Producer Graham Chedd chat about and play excerpts from Alan's conversations with some of the guests in the new season, beginning next week. Guests include newspaper editor Adam Moss; science journalist Rebecca Boyle; and writers Kelly and Zach Weinersmith.

Stephen Dubner, host of Freakonomics Radio, has long been fascinated by the great physicist Richard Feynman. As has Alan. Stephen has devoted a year to making a remarkable podcast series on Feynman, and Alan has played Feynman on the stage for a year. They compare notes on what they’ve come to learn about him.

In this special episode of Clear and Vivid we reflect on Frans’ life-long commitment to revealing how much we humans have in common with our primate cousins.

When interpreting the Constitution, the dangers of relying solely on the words and what they meant at the time, without taking into account the purpose and values expressed in those words.

A leading physicist herself, Shohini Ghose has wonderful stories about the trials and triumphs of the many mostly unsung women whose work helped open up the universe.

We can get used to things to the point where even something we once thought wonderful can lose its luster. More sinister, we can also get used to the drip, drip of falsehoods till we become dulled to their danger. How to overcome habituation, and even take advantage of it.

The intriguing stories behind the often weird and baffling origins of punctuation and other symbols we use to communicate. And it’s not just commas, colons and periods. There are pilcrows, octothorps, interrobangs and a whole menagerie more.

The Irondale Ensemble Project, a theater company rooted in improvisation, created a program to help police and community build trust and mutual understanding through theater games.