Science Friday

Screens are ubiquitous in today’s world, and concerns about how they affect kids are mounting. Last month, Australia banned social media use for kids under 16, with some European countries poised to follow. But what’s the science on how neverending YouTube videos or TikToks affect kids’ brains and bodies? 
Joining Host Flora Lichtman to discuss are neuroscientist John Foxe and behavioral developmental pediatrician Jenny Radesky.
Guests:
Dr. John Foxe is Director of The Del Monte Institute for Neuroscience at the University of Rochester in New York.
Dr. Jenny Radesky is a developmental behavioral pediatrician at the University of Michigan in Ann Arbor. She’s also co-Medical Director of the American Academy of Pediatrics Center of Excellence on Social Media and Youth Mental Health.
Transcripts for each episode are available within 1-3 days at sciencefriday.com.

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Wandering through a museum, you can get a glimpse of what life in ancient societies looked like. But what did it smell like? And is it even possible to get a whiff of, say, a freshly embalmed mummy, or a 5,000-year-old Saudi Arabian incense burner? That’s exactly what some chemists and olfactory designers are trying to do.
Producer Kathleen Davis talks with archeo-chemist Barbara Huber and perfumer Carole Calvez about how they scientifically recreated the scent of ancient Egyptian mummies and brought that smell to museums on special cards.
Guests:
Dr. Barbara Huber is an archeo-chemist at the University of Tübingen in Germany.
Carole Calvez is a perfumer and olfactory designer and a cofounder of  Iris & Morphée in Paris, France. 
Transcripts for each episode are available within 1-3 days at sciencefriday.com.
 

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Cyanobacteria may be the ultimate lesson in resilience. These 3.5 billion-year-old organisms have lived through hell-on-earth conditions, and found creative ways to persevere. While the state of the world feels out of control, Host Flora Lichtman talks to molecular microbiologist Devaki Bhaya about the planet’s ultimate survivalists.
Guest: Dr. Devaki Bhaya is a molecular microbiologist at Carnegie Science in Stanford, California.  
The transcript for this episode is available at sciencefriday.com.

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The Relativistic Heavy Ion Collider (RHIC), the largest particle collider in the United States, collided its last particles in early February. RHIC is a massive accelerator ring and set of instruments based at New York’s Brookhaven National Laboratory, and was designed to accelerate gold ions to near-light speed before collision. It was the second most powerful accelerator on the planet, second only to CERN’s Large Hadron Collider. Since RHIC began running in 2000, scientists have used it to study the tiniest subatomic particles, which give insight into some of the universe’s biggest questions. 
Brookhaven nuclear physicist Gene Van Buren joins Host Flora Lichtman to look back on the history of RHIC, what physicists have learned from the collider, and what lies ahead for particle physics.
Guest: Dr. Gene Van Buren is a nuclear physicist at Brookhaven National Laboratory in Upton, New York.
Transcripts for each episode are available within 1-3 days at sciencefriday.com.

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This year’s Winter Olympics feature a new event called “skimo,” or ski mountaineering. The racing event involves periods of skiing uphill using “skins” for traction, sprinting uphill on foot, and a downhill ski slalom to the finish. Mountaineering historian Peter Hansen joins Host Flora Lichtman for an introduction to skimo, and the scientific connections of early modern mountaineers. 
Then, wildlife ecologist Kevin White describes the amazing capabilities of the mountain goat, what’s known about the physical features that contribute to their climbing ability, and risks to mountain goat populations.
Guests:
Dr. Peter Hansen is a professor of history at Worcester Polytechnic Institute, and author of the book The Summits of Modern Man: Mountaineering after the Enlightenment.
Dr. Kevin White is a wildlife ecologist based at the University of Alaska Southeast.
Transcripts for each episode are available within 1-3 days at sciencefriday.com.

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