Science Talk

Life expectancy has risen dramatically since 1900, reshaping how we understand aging. Scientists now view skin not just as a surface indicator, but as a biological marker of systemic health. In this podcast episode, Scientific American Custom Media explores how longevity science is offering new insights into vitality across the lifespan. Learn more about your ad choices. Visit megaphone.fm/adchoices

In this episode, host Rachel Feltman speaks with freelance science journalist Hannah Seo about a promising new development in male contraception: a hormone-free birth control pill that reversibly stops sperm production has just passed its first human safety trial. Seo explains how the drug works, what makes it different from hormone-based methods and where it stands in clinical development.   Recommended reading: First Hormone-Free Male Birth Control Pill Shown Safe in Early Human Trial Male Birth Control Is in Development, but Barriers Still Stand in the Way “Safety and Pharmacokinetics of the Non-Hormonal Male Contraceptive YCT-529,” by Nadja Mannowetz et al., in Communications Medicine, Vol. 5, Article No. 279. Published online July 22, 2025 Email us at [email protected] if you have any questions, comments or ideas for stories we should cover! Discover something new every day: subscribe to Scientific American and sign up for our daily newsletter. Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-check the show. The theme music was composed by Dominic Smith. Learn more about your ad choices. Visit megaphone.fm/adchoices

Rogue planets drifting through space might be forming their own planetary systems. NASA’s Europa Clipper mission has completed a key radar test ahead of its journey to study Jupiter’s icy moon. Plus, a major shift in U.S. health research funding occurs as Secretary of Health and Human Services Robert F. Kennedy, Jr., cancels nearly $500 million in funding for mRNA vaccine development. E-mail us at [email protected] if you have any questions, comments or ideas for stories we should cover! Discover something new everyday: subscribe to Scientific American and sign up for our daily newsletter.  Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-check our show. Our theme music was composed by Dominic Smith.  Learn more about your ad choices. Visit megaphone.fm/adchoices

Representative Eric Sorensen of Illinois brings his background as a meteorologist to the halls of Congress, advocating for science-based policy amid intensifying climate threats. In this episode, he shares how personal experiences with extreme weather shaped his career and why protecting agencies like the National Weather Service is more urgent than ever. Sorensen also discusses the political challenges of defending climate science and makes a compelling case for why more scientists should enter public office. Recommended reading: Higher Bills, Hotter Planet: What Trump’s Megabill Means for You Texas Failed to Spend Millions in Federal Aid for Flood Protection Flood Forecasts Could Worsen as Trump’s NWS Cuts Take Hold E-mail us at [email protected] if you have any questions, comments or ideas for stories we should cover! Discover something new everyday: subscribe to Scientific American and sign up for our daily newsletter.  Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-checked ourthe show. The theme music was composed by Dominic Smith. Learn more about your ad choices. Visit megaphone.fm/adchoices

The White House has proposed sharp cuts to NASA’s science budget, potentially reducing it to historic lows not seen since the early Apollo era. Beyond space exploration, NASA’s work influences daily life—from accurate weather forecasting to essential climate data for agriculture. Concerned by the effects of these cuts, all living former NASA science chiefs have united in warning of dire consequences for U.S. leadership in science. In this episode, Scientific American senior editor Lee Billings speaks with host Rachel Feltman to discuss why this moment feels especially urgent and what one former NASA science chief thinks about it. Recommended reading: White House Budget Plan Would Devastate U.S. Space Science U.S. Secretary of the Interior: Satellites Will Help Us Fight Climate Change The Trump-Musk Fight Could Have Huge Consequences for U.S. Space Programs Email us at [email protected] if you have any questions, comments or ideas for stories we should cover! Discover something new everyday: subscribe to Scientific American and sign up for our daily newsletter.  Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-check the show. The theme music was composed by Dominic Smith.  Learn more about your ad choices. Visit megaphone.fm/adchoices

Host Rachel Feltman talks with Andrea Thompson, Scientific American’s senior sustainability editor, to discuss the massive Russian earthquake and the reason it produced such relatively minor tsunami waves. Plus, we discuss the lowdown on the Environmental Protection Agency’s move to repeal of the “endangerment finding,” the advantages of a brisk stroll and an ancient linkup that led to a farmer’s market favorite. Recommended reading: Tsunami Warnings Issued after Magnitude 8.8 Earthquake Strikes off Russian Coast Russia’s 8.8 Earthquake Is One of the Strongest Ever Recorded Why the Russian Earthquake Didn’t Cause a Huge Tsunami The Potato’s Mysterious Family Tree Revealed—And It Includes Tomatoes E-mail us at [email protected] if you have any questions, comments or ideas for stories we should cover! Discover something new every day: subscribe to Scientific American and sign up for Today in Science, our daily newsletter.  Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-check our show. Our theme music was composed by Dominic Smith. Learn more about your ad choices. Visit megaphone.fm/adchoices

Host Rachel Feltman talks with Deni Ellis Béchard, Scientific American’s senior tech reporter, about his recent exchange with Claude 4, an artificial intelligence chatbot that seemed to suggest it might be conscious. They unpack what that moment reveals about the state of AI, why it matters and how technology is shifting. Recommended reading: Can a Chatbot be Conscious? Inside Anthropic’s Interpretability Research on Claude 4 New Grok 4 Takes on ‘Humanity’s Last Exam’ as the AI Race Heats Up E-mail us at [email protected] if you have any questions, comments or ideas for stories we should cover! Discover something new every day: subscribe to Scientific American and sign up for Today in Science, our daily newsletter.  Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-check our show. Our theme music was composed by Dominic Smith. Learn more about your ad choices. Visit megaphone.fm/adchoices

The summer of 2025 has been a doozy in the U.S., with extreme weather across the country. Flash flooding caused destruction and death in Texas. Corn sweat made a heat wave in the eastern half of the U.S. worse in the Midwest. Senior editor for sustainability Andrea Thompson takes us through these extreme weather events. Recommended reading: Why Did Waters Rise So Quickly in the Texas Flash Floods? https://www.scientificamerican.com/article/why-did-texas-flash-flood-waters-rise-so-quickly/  ‘Corn Sweat’ Is Making This Heat Wave Even Worse https://www.scientificamerican.com/article/humidity-from-corn-sweat-intensifies-extreme-heat-wave-in-midwest-u-s/  E-mail us at [email protected] if you have any questions, comments or ideas for stories we should cover! Discover something new every day: subscribe to Scientific American and sign up for Today in Science, our daily newsletter.  Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was hosted by Rachel Feltman with guest senior editor for sustainability Andrea Thompson. Our show is edited by Alex Sugiura with fact-checking by Shayna Posses and Aaron Shattuck. The theme music was composed by Dominic Smith. Learn more about your ad choices. Visit megaphone.fm/adchoices

If last Tuesday seemed to fly by, you can blame the rotation of Earth. Try to look up this week to see the Southern Delta Aquariids and the Alpha Capricornids meteor showers. Plus, we discuss FEMA cuts and ancient arthropods. Recommended reading: Texas Failed to Spend Millions in Federal Aid for Flood Protection https://www.scientificamerican.com/article/texas-failed-to-spend-federal-aid-for-flood-disaster-protection/  Leap Seconds May Be Abandoned by the World’s Timekeepers https://www.scientificamerican.com/article/leap-seconds-may-be-abandoned-by-the-worlds-timekeepers/ E-mail us at [email protected] if you have any questions, comments or ideas for stories we should cover! Discover something new every day: subscribe to Scientific American and sign up for Today in Science, our daily newsletter.  Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was hosted by Rachel Feltman. Our show is fact-checked by Shayna Posses and Aaron Shattuck. The theme music was composed by Dominic Smith. Learn more about your ad choices. Visit megaphone.fm/adchoices

Chief multimedia editor Jeffery DelViscio ventured to Greenland for a month to learn from the scientists studying the country’s ice sheet. He speaks with host Rachel Feltman about his time in the field and his takeaways from conversations with climate scientists. This story was supported by a grant from the Pulitzer Center. This story was made possible through the assistance of the U.S. National Science Foundation Office of Polar Programs.  Read the cover story and see stunning pictures from DelViscio’s time on the ice:  What Greenland’s Ancient Past Reveals about Its Fragile Future https://www.scientificamerican.com/article/greenlands-ice-sheet-collapse-could-be-closer-than-we-think/ E-mail us at [email protected] if you have any questions, comments or ideas for stories we should cover! Discover something new every day: subscribe to Scientific American and sign up for Today in Science, our daily newsletter.  Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was hosted by Rachel Feltman. This show is edited by Jeff DelViscio with fact-checking by Shayna Posses and Aaron Shattuck The theme music was composed by Dominic Smith. Learn more about your ad choices. Visit megaphone.fm/adchoices