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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.
705: A Black Physician’s Analysis Of The Legacy Of Racism In Medicine
704: Faraway Planets With Oceans Of Magma | The Art And Science Of Trash Talk
701: Is Each Fingerprint On Your Hand Unique? | In This Computer Component, Data Slides Through Honey
700: The FDA Approved The First CRISPR-Based Therapy. What’s Next?
703: Protecting The ‘Satan’ Tarantula | If Termites Wore Stripes, Would Spiders Still Eat Them?
699: Scientists Are Uncovering A World Of ‘Dark Matter’ Carcinogens
702: Syphilis Cases Up 80% Since 2018 | The Largest Deep-Sea Coral Reef In The World
698: Expanding Our Umwelt: Understanding Animal Experiences
695: How Signing Characters Help Deaf Children Learn Language
696: ‘Mysterious’ Canine Illness: What Dog Owners Should Know
694: An App For People Of Color To Rate Their Birthing Experiences | How Different Animals See
697: NASA Opens Canister With Asteroid Sample | ADHD Prescription Rates Spiked During The Pandemic
693: AI Helps Find Ancient Artifacts In The Great Lakes | An Artist Combines Indigenous Textiles With Modern Tech
691: When The ‘Personal’ Computer Turned 30
690: How The Moon Transformed Life On Earth, From Climate to Timekeeping
692: From Scans To Office Visits: How Will AI Shape Medicine?
689: Rhesus Monkey Cloned With Modified Approach Has Survived Into Adulthood
688: 3,000 Types Of Brain Cells Categorized In Massive Brain Cell Atlas
685: Brain ‘Organoids’: Lab-Grown Cell Clusters Model Brain Functions
687: The Lasting Allure Of Shackleton’s ‘Endurance’
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