Our guest is renowned neuroscientist and primatologist Robert Sapolsky.  He’s spent his career investigating behavior across the animal kingdom, including humans.  In books like The Trouble With Testosterone and Why Zebras Don’t Get Ulcers, Sapolsky translates decades of research into fascinating stories and lessons accessible to non-scientific audiences. His latest book, Determined: A Science of Life Without Free Will, offers a marvelous synthesis of what we know about how consciousness works—the tight weave between reason and emotion and between stimulus and response in the moment and over a life. On January 3, 2024, Sapolsky joined Caterina Fake for a conversation recorded at the studios of KQED in San Francisco.