Science Friday

What happens when the skies are no longer dark at night? Writer Craig Childs biked from the brightest night sky, to the darkest, to find out what we lose when the lights don’t go out. He joins Host Ira Flatow to talk about his book “The Wild Dark,” our SciFri Book Club pick for July and August.

Plus, astronomer John Barentine fills us in on DarkSky International’s latest report, “Artificial Light at Night: State of the Science 2026.”

Read an excerpt from “The Wild Dark: Finding the Night Sky in the Age of Light.” 

Guests:

Craig Childs is the author of “The Wild Dark: Finding the Night Sky in the Age of Light.” 

Dr. John Barentine is an astronomer and principal consultant at Dark Sky Consulting, LLC

Transcripts for each episode are available within 1-3 days at sciencefriday.com.

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The ongoing Ebola outbreak in the Democratic Republic of Congo and Uganda has become the third-largest on record. And while the regional response is more robust than it was during the largest outbreak, in 2014-2016, the U.S. has now largely divested from global health initiatives under President Trump. So it raises the question: What role should the U.S. play in global health? And how do we build systems that protect our collective health even as political winds change?

Flora speaks with John Nkengasong, virologist and founder of the Africa CDC, about Ebola, what it took to curb HIV/AIDS, and how to make global health initiatives more resilient. Dr. Jessica Bartley is senior director of psychological services for the U.S. Olympic and Paralympic Committee.

Guest: 

Dr. John Nkengasong has led public health initiatives in the United States and across Africa for over 30 years. He is also the executive director for higher education, collaboratives, and special initiatives at the Mastercard Foundation.

Other episodes you may enjoy:

A virus hunter in Nigeria has thoughts on the Ebola outbreak

Inside the Nebraska quarantine facility responding to hantavirus

Transcripts for each episode are available within 1-3 days at sciencefriday.com.

Subscribe to this podcast. Follow our show on Instagram, TikTok, Facebook, and Bluesky @scifri and sign up for our newsletters. Got a science question that’s keeping you up at night? Call us: 877-472-4374

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Gut feelings, trusting your gut, butterflies: We have lots of expressions about how our brains and our bowels are intertwined. But how well do we understand the science of this on the biomolecular level? And which of those organs is actually in the driver's seat? 

Flora churned through the details with gastroneurologists Emeran Mayer and Trischa Pasricha on stage at the 2026 Aspen Ideas Festival in Colorado. 

Guests:

Dr. Emeran Mayer is distinguished research professor at the David Geffen School of Medicine at UCLA, and executive director of the G. Oppenheimer Center for Neurobiology of Stress and Resilience.

Dr. Trisha Pasricha is a neurogastroenterologist and physician-scientist at Beth Israel Deaconess Medical Center as well as an assistant professor of medicine at Harvard Medical School.

Other episodes you may enjoy:

How to poop better, according to a gastroenterologist

The Gurgling, Growling History Of The Gut

A transcript for this episode is available at sciencefriday.com.

Subscribe to this podcast. Follow our show on Instagram, TikTok, Facebook, and Bluesky @scifri and sign up for our newsletters. Got a science question that’s keeping you up at night? Call us: 877-472-4374

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The band Phish has toured for over 40 years. One of the draws of their legendary live shows—which can go on for 8 hours—is finding moments of “flow,” when the band members lock into an improvised jam, finding new musical ideas in real time.

Phish fans live for these transcendent moments, but so do the musicians—to the point that Mike Gordon, the band’s bass player, is funding scientific research to better understand flow state.

In November 2025, Host Flora Lichtman sat down with Mike and his research collaborator, neuroscientist Greg Appelbaum, to unpack their research so far and how it’s helping to inform other neuroscience.

Guests:

Mike Gordon is bassist and co-founder of the seminal improvisational rock band Phish. 

Dr. Greg Appelbaum is a professor in the department of psychiatry at the University of California, San Diego. 

A transcript for this episode is available at sciencefriday.com.

Subscribe to this podcast. Follow our show on Instagram, TikTok, Facebook, and Bluesky @scifri and sign up for our newsletters. Got a science question that’s keeping you up at night? Call us: 877-472-4374

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Americans pay roughly three times as much for prescription meds as people in other wealthy nations. But why?

Tahir Amin argues it’s largely to do with how our patent systems work. He’s been on both sides of the issue: He spent a decade as an intellectual property lawyer, helping corporations use patents to protect their bottom lines. Then he moved to India and saw firsthand how the global patent system hampered access to HIV drugs.

That led him to shift gears and create an advocacy organization aimed at changing the patent system to make access to medicines more equitable. He chats with Flora about how it all works, and his new book, “Pharma Monopoly.”

Read an excerpt from “Pharma Monopoly: The Battle for the Future of Medicines.”

Guest:

Tahir Amin is a co-author of “Pharma Monopoly: The Battle for the Future of Medicines” and a founder and CEO of Initiatives for Medicine Access and Knowledge (I-MAK). 

Transcripts for each episode are available within 1-3 days at sciencefriday.com.

Subscribe to this podcast. Follow our show on Instagram, TikTok, Facebook, and Bluesky @scifri and sign up for our newsletters. Got a science question that’s keeping you up at night? Call us: 877-472-4374

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