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. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

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. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

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. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

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. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

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. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

As ICE cracks down in Minneapolis and across the country, reporters and privacy advocates have drawn attention to how the agency is using technology: scanning people’s faces without consent, using private health records to make arrests, tracking people’s location in real time with phone data.So how does all this work? How does the United States’ data ecosystem make it possible for not just ICE, but any number of government agencies and businesses to buy our private data? And what actually happens after we send that DM or open up Instagram at a protest to post a picture?To learn more, Host Flora Lichtman sits down with law professor and tech policy expert Laura Moy. She’s testified in Congress about privacy laws and how data brokers profit off of personal data.Guest: Laura Moy is an associate professor of law at Georgetown Law, based in Washington, D.C.Transcripts for each episode are available within 1-3 days at sciencefriday.com. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

The new dietary guidelines from the USDA call for Americans to “eat real food” and consume less “highly processed” food. But how? By some estimates, ultraprocessed foods make up nearly 60% of the average American adult diet, and they’re all over school lunch menus.Health policy expert Laura Schmidt and nutrition policy researcher Alyssa Moran join Host Flora Lichtman to talk about ultraprocessed foods and our food supply. What might they be doing to our health, and what steps could policymakers take to help Americans eat less of them? Guests:Dr. Laura Schmidt is a professor at the Institute for Health Policy Studies at the University of California, San Francisco.Dr. Alyssa Moran is deputy director of the Center for Food and Nutrition Policy at the University of PennsylvaniaTranscripts for each episode are available within 1-3 days at sciencefriday.com. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

In an effort to make their farms more environmentally and economically sustainable, some farmers are experimenting with agrivoltaics: growing crops underneath solar panels. This dual harvest is working for some, but what will it take for agrivoltaics to work on a larger, more industrial scale? Joining Host Ira Flatow are journalist Jana Rose Schleis and environmental economics expert Madhu Khanna.Guests:Jana Rose Schleis is a news producer at KBIA in Columbia, Missouri. Her podcast series, “The Next Harvest,” is available on podcast platforms.Dr. Madhu Khanna is a professor of environmental economics and director of the Institute for Sustainability, Energy, and Environment at the University of Illinois Urbana-Champaign.Transcripts for each episode are available within 1-3 days at sciencefriday.com. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

Point systems are everywhere. Ready for movie night? Consult Rotten Tomatoes. Vetting a new pediatrician? See how many stars they have. At work, it can be even more pervasive: There’s KPIs and ROIs because success has to be measurable. But what happens when we boil something down to one nice number? What do we lose? Philosopher C. Thi Nguyen, author of the new book The Score, joins Host Flora Lichtman to explore how metrics can be soul-crushing in work and in life, yet keeping score is freeing in the world of games. Read an excerpt from The Score: How to Stop Playing Somebody Else's Game.Guest:Dr. C. Thi Nguyen is a philosophy professor at the University of Utah in Salt Lake City. He’s the author of The Score: How to Stop Playing Somebody Else's Game.Transcripts for each episode are available within 1-3 days at sciencefriday.com. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

We’re bringing you a special bonus episode from our friends at the live call-in show “The Middle with Jeremy Hobson.” Jeremy is joined by Science Friday Host Flora Lichtman and theoretical astrophysicist Priya Natarajan to talk about how trust in science can be restored. It took a hit with the COVID-19 pandemic, and the Trump Administration has now elevated science skeptics to positions of power and proposed giant cuts in scientific research. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

All the pups we love—from chihuahuas to great danes—are descendants of the mighty gray wolf. But how did we end up with so many breeds? The story that's often told is that dog diversity really took off with the Victorians in the 1800s, but new research is unleashing a different tale. Host Flora Lichtman talks with bioarchaeologist Carly Ameen about the diversification of dogs. Plus, a long-running experiment to tame silver foxes is cluing us into how domestication happens. Canine researcher Erin Hecht gives us a glimpse into the experiment and what it tells us about domesticated brains.Guests:Dr. Carly Ameen is a bioarcheologist and lecturer at the University of Exeter in England.Dr. Erin Hecht is an evolutionary biologist at Harvard in Cambridge, Massachusetts. Transcripts for each episode are available within 1-3 days at sciencefriday.com. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

We keep hearing that these are unprecedented times for science: scientific skeptics running federal agencies, growing mistrust of vaccines, and messaging from the highest levels of government that scientists are in the pocket of industry. To understand how unique this time really is, we’re talking to Naomi Oreskes, a science historian who has spent her career studying skepticism in science. She joins Host Flora Lichtman to discuss our current moment, and how ghostwriting in scientific papers is harming public trust in science.Guest: Naomi Oreskes is a professor of the history of science at Harvard University, based in Cambridge, MA.Transcripts for each episode are available within 1-3 days at sciencefriday.com. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.