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A Possible Breakthrough Superconductor Has Scientists Split
Recently, a superconducting material went viral in the scientific community. Researchers in South Korea say they’ve discovered a room-temperature, ambient-pressure superconductor. If it works, it would create electricity under normal, everyday conditions.
But some scientists are hesitant to applaud this purported breakthrough. This field has a long history of supposed breakthroughs, many of which turn out to be not so superconducting after all.
In other science news, NASA has detected a ‘heartbeat’ from the Voyager 2 spacecraft, which lost contact last month. This may allow scientists to reestablish contact with the spacecraft before its expected October 15 date.
Joining Ira to talk about these stories and more is Sophie Bushwick, technology editor for Scientific American, based in New York, New York.
How Oppenheimer’s Bombs Compare To Today’s Nukes
On the day the film Oppenheimer came out, Science Friday discussed the history of the Manhattan Project, including the legacy of the Trinity Test, where the world’s very first nuclear weapon was detonated in the desert of New Mexico. We also heard from a survivor of the Hiroshima bombing and a New Mexican downwinder.
But our listeners responded with even more questions that we couldn’t get to—including this, from Randy in Orlando, who wrote, “I’ve heard Neil deGrasse Tyson say the new bombs aren’t that dirty?”
Randy’s referring to the astrophysicist’s interview last November, in which he said: “Modern nukes don’t have the radiation problem … it’s a different kind of weapon than Hiroshima and Nagasaki.” We wanted an answer to this question—and others—about current nuclear weapons technology, an issue that Russia’s implied threats of using nuclear weapons against Ukraine also raise.
Ira talks with Dr. Zia Mian, a physicist and co-director of Princeton’s Program on Science and Global Security, about how nuclear weapons technology has evolved over the last 80 years, how many there are, and the new threats they pose.
From Splenda to Aspartame: Are the Artificial Sweeteners We Use Hurting Us?
The World Health Organization recently classified aspartame as a “possible carcinogen.” While the designation may seem scary, it simply indicates that the agency cannot rule out that the substance causes cancer. There is not enough evidence to suggest that aspartame, found in many sugar-free beverages, is linked to cancer.
Ira breaks down the science behind that decision, what we know about the health effects of artificial sweeteners, and takes listener calls with guests Marji McCullough, senior scientific director of epidemiology research at the American Cancer Society and Dr. Walter Willett, professor of epidemiology and nutrition at the Harvard T.H. Chan School of Public Health.
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Transcripts for each segment will be available the week after the show airs on sciencefriday.com.
764: Inside Iowa State’s Herbarium | Science-Inspired Art From ‘Universe of Art’ Listeners
763: Science From Iowa’s Prairies | Planning To Go See Cicadas? Here’s What To Know
762: Maybe Bonobos Aren't Gentler Than Chimps | Art Meets Ecology In A Mile-Long Poem
761: When Products Collect Data From Your Brain, Where Does It Go?
760: Visualizing A Black Hole’s Flares In 3D
759: The 4,000-Year History of Humans and Silk
758: Flint’s Water Crisis, 10 Years Later | Underwater Cables Could Help Detect Tsunamis
757: Fighting Banana Blight | Do Birds Sing In Their Dreams?
756: Why Is Solving The Plastic Problem So Hard?
755: What Worsening Floods Mean For Superfund Sites
754: The Global Mental Health Toll Of Climate Change | Capturing DNA From 800 Lakes In One Day
753: Clean Energy Transition Progress | Avian Flu In Cattle And Humans Has Scientists Concerned
752: A Cheer For The Physics Of Baseball
752: Carbon Cost Of Urban Gardens And Commercial Farms | Why There's No Superbloom This Year
751: Inside The Race To Save Honeybees From Parasitic Mites
750: The Brain’s Glial Cells Might Be As Important As Neurons
749: Limits On ‘Forever Chemicals’ In Drinking Water | An Important Winter Home For Bugs | Eclipse Drumroll
748: Investigating Animal Deaths At The National Zoo
745: Eating More Oysters Helps Us—And The Chesapeake Bay
747: How Trees Keep D.C. And Baltimore Cool
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