He’s fascinated by how culture has shaped our evolution – not only changing our bodies and expanding our brains but even expanding our ability to cooperate. And the more diverse a culture, the better its ability to innovate.

That’s the title of a new book by New York Times technology reporter Kashmir Hill. Her book is both deeply researched and downright scary, as spelled out in the book’s subtitle: A Secretive Start-Up’s Quest to End Privacy As We Know it. A glimpse of your face in any photo you’ve ever uploaded can now lead to anyone discovering details of your life – both on-line and out there in the world.

Author of a best-selling book called Why We Sleep, and host of the Matt Walker Podcast, he’s become the go-to expert on everything to do with sleep, from how it keeps both mind and body healthy to why we dream.

A brilliant violinist in her teens, her world came crashing down when an injury ended her career even as it was beginning. Remarkably, she turned that loss into a PhD in neuroscience, a stint in the White House and a popular podcast about others also navigating drastic changes in their lives.

Do you believe people are worse now than they use to be? That smarter people are happier people? That you know when to quit a conversation? Wrong on all counts, according to Adam Mastroianni, a social psychologist. He’s also a professional improv performer and uses those skills teaching business school students.

Nancy Kanwisher has discovered many areas of the brain that are specialized for one particular purpose— like recognizing faces – which is interesting to Alan because of his inability to remember the faces of people he meets. Other specialized areas include identifying food, which Alan so far has no trouble with.

She managed to write a lyrical, moving book about her journey to a massive glacier in Antarctica that, if it collapses into the ocean, would cause a catastrophic rise in sea level. Unexpectedly, it’s also a book about her difficulty in choosing motherhood in a time of radical climate change.

The actor/writer/comedian has been an inspiration to comedians like Jay Leno and Jerry Seinfeld. And he’s been inspired himself by greats of the past in the exacting art of finding what’s funny in our daily lives – when observed from just the right angle.

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 comedian Robert Klein; writer Elizabeth Rush; and neuroscientist Nancy Kanwisher.

Counterfeit people, the seductively appealing Deep Fakes made possible by AI, are just the beginning of what the distinguished philosopher Dan Dennett says is a threat to humanity. This spring, he joined hundreds of other thought leaders in signing a starkly scary statement: AI threatens to make us extinct.