The Pasadena Civic Auditorium was packed to capacity Tuesday as Ella Al-Shamahi, anthropologist, explorer, and host of PBS’s Nova series Human, delivered the first of two talks on man’s layered origins. With equal measures of humor, adventure, and scientific insight, she guided the audience on a sweeping journey from the earliest human ancestors to the frontiers of modern genetic discovery.
She began by dismantling the myth of the lone genius. “If you were to get Steve Jobs and dump him 50,000 years ago, he would never have invented the iPhone,” she said. “It required 50,000 years with lots and lots of people all perfecting, and tinkering.” Then, turning to baking , of all things, she illustrated “cumulative culture”: a small tribe might invent the pancake, but a large cooperative group could reach the “red velvet” stage much faster.
“There’s just more of you looking at each other going, ‘What if I add chocolate?’”
She emphasized the evolutionary roots of cooperation and tribalism. Discussing oxytocin, the so-called “bonding hormone,” she remarked, “It’s warm and fuzzy—but also a very slightly racist grandmother moment,” noting its role in encouraging preference for one’s own group. Ritual, music, and dance, she explained, function as social glue: “If you want two absolute strangers to bond, start blasting some music and encourage them to dance.”
Al-Shamani recounted studies showing that people who danced together felt unexpectedly close afterward, even assigning similar political views to strangers they had never spoken to.
Al-Shamahi shared deeply personal experiences, recounting leaving her creationist upbringing. “I told myself, ‘You don’t believe in creationism. You believe in evolution.’
And she had literally been a creationist missionary in her younger years.
She described the challenge of leaving her tribe—a response hardwired from Paleolithic survival instincts—and how, 13 years later, former members of her community have now embraced evolution.
The talk included field work stories, from cockroach-infested cargo ships en route to Yemen’s Socotra island, to navigating politically unstable territories in pursuit of human history. Al-Shamahi highlighted discoveries that illuminate the human story, from hybrid Denisovan-Neanderthal DNA to fossilized footprints in New Mexico. “At times, the footprints get broader and slip in the mud,” she recalled. “That’s because she was carrying a child… I just can’t think of anything more human than a mother and child walking together.”
Turning to more modern implications, she cautioned that technological advances and urban lifestyles are reshaping human communities. “Evolution has practically stopped in technologically advanced countries,” she said, noting that modern medicine allows survival independent of biological fitness. Her overarching message: cooperation, imagination, and community have always been and always will be humanity’s defining traits.
Al-Shamahi’s talk was hardly a lecture—it was a vivid, emotional journey through the human past, connecting very, very ancient ancestors to the world we continue to shape today.
The Pasadena Distinguished Speaker Series will launch its 29th season this fall, continuing its tradition of hosting globally recognized thought leaders at the historic Pasadena Civic Auditorium.
The 2025–26 lineup includes former Finnish Prime Minister Sanna Marin on Nov. 19, followed by Yale psychology professor Dr. Laurie Santos on Jan. 14, 2026. U.S. Secretary of Transportation Pete Buttigieg is scheduled for Feb. 11, with veteran sportscaster Bob Costas appearing on April 6. The season concludes May 4 with Dr. Anthony Fauci, former director of the National Institute of Allergy and Infectious Diseases.
All events will be held at the Pasadena Civic Auditorium. The Distinguished Speaker Series of Southern California has long served as a cultural cornerstone for the region, offering audiences direct engagement with influential voices across politics, science, media and academia. Visit https://www.speakersla.com/locations/pasadena/
