The space elevator has been a staple of science fiction for decades, from The Fountains of Paradise by Arthur C. Clarke to the Apple TV show “Foundation.” But the work and theories to make it a reality have been in development since the late 19th century.It’s a simple concept: Imagine a long cable, stretching from the Earth’s surface to a satellite locked in orbit 22,000 miles high. It would work like elevators here on Earth, enabling us to send things—and people—up into space. And it would make the need for the expensive rockets we use today obsolete.Although it has never been considered feasible due to the exorbitant cost and the engineering challenges it poses, the idea refuses to go away.One of Japan’s biggest construction companies, the Obayashi Corporation, which built the Tokyo Sky Tree, had plans to build a space elevator in 2025 but has reportedly delayed that goal.So what are the hurdles that keep us from building it? And why does it seem that the space elevator is always 25 years away? Ira Flatow is joined by Dr. Dennis Wright, president of the International Space Elevator Consortium to talk about the feasibility of this megaproject.Transcripts for each segment will be available after the show airs on sciencefriday.com.
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Covering the outer reaches of space to the tiniest microbes in our bodies, Science Friday is the source for entertaining and educational stories about science, technology, and other cool stuff.
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1223 Folgen
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Folge vom 21.08.2024Are Space Elevators Really A Possibility?
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Folge vom 20.08.2024Could Light And Sound Therapy Treat Alzheimer’s?A new potential Alzheimer’s therapy uses 40-hertz frequencies of light and sound to stimulate the brain. Research applying this treatment to mice showed a substantial decrease in amyloid plaques, a key biomarker for the disease, and an improvement in cognitive function. Clinical trials testing the efficacy of this method in humans are underway.But how exactly does this treatment work? Could it be a game changer in Alzheimer’s patients? And what potential does it have for other degenerative diseases, like multiple sclerosis?Ira talks with Dr. Li-Huei Tsai, professor of neuroscience and director of Picower Institute for Learning and Memory at the Massachusetts Institute of Technology, about her work developing this therapy.Transcript for this segment will be available after the show airs on sciencefriday.com. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.
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Folge vom 19.08.2024Dr. Fauci On A Life Of Medical Research And Public ServiceDr. Anthony Fauci has a long history with Science Friday. Ira first met him in the early 1980s while covering the HIV/AIDS epidemic. He has been a frequent guest on the program, discussing everything from the common cold to SARS, food allergies to Ebola, and malaria to the recent COVID-19 pandemic.After leading the National Institute of Allergy and Infectious Diseases for 38 years, Fauci stepped down in December 2022. But he certainly hasn’t disappeared from the public eye. He’s been called to testify regularly before Congress and he’s written a new book, On Call: A Doctor’s Journey in Public Service. He joins Ira for a wide-ranging discussion of AIDS, COVID-19, public health vulnerabilities, and his new post-government role as a teacher.Transcript for this segment will be available after the show airs on sciencefriday.com. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.
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Folge vom 16.08.2024Evidence For Liquid Water On Mars | Making Campsite Booking FairerData from the Mars InSight lander points to the presence of liquid water underneath its crust. Also, some national and state parks are changing the way they open up campsite reservations online to make them more accessible to everyone.Scientists Find Strong Evidence For Liquid Water On MarsScientists discovered that there could be oceans’ worth of liquid water hidden underneath Mars’ surface. More than 3 billion years ago, Mars had lakes, rivers, and maybe even oceans on its surface. It was very different from the arid red planet we know today.But the question remains—when Mars’ atmosphere changed, where did all that water go? This discovery could offer up new clues and possibly spur on the search for life on Mars.Ira talks with Maggie Koerth, science writer and editorial lead for Carbon Plan, about this discovery and other science news of the week, including why the WHO declared mpox a global health emergency, the microbiome of your microwave, a green-boned dinosaur named Gnatalie, and how love is in the air for brown tarantulas.Releasing Campsite Reservations In Waves Makes Booking FairerBack in 2022, Science Friday discussed how campsites in state and national parks were virtually impossible to reserve, unless you had a lot of time on your hands and knew exactly when those reservations were going online. Research had shown that the people able to reserve these sites were often wealthy, educated, and white, leaving lots of other people out of the fun of camping.But two years later, the same team that found those results says there’s good news: Many state and federal campgrounds have changed how their booking windows work, and as a result, camping has become more equitable.For example, Saddlehorn Campground near Grand Junction, Colorado, was identified as a campground with an inequitable reservation system in a 2022 study. After its publication, campground managers reached out to the study authors to see how they could do better.“They’ve created what I would call the gold standard in an equitable recreation rationing spectrum for these campsites,” said Dr. Will Rice, assistant professor of outdoor recreation and wildland management at the University of Montana in Missoula.This method is to release campsites in waves: Some become available six months in advance, some two weeks in advance, and some day-of. This allows more flexibility for people to book, and is an easy fix on the part of the campgrounds.Rice joins Ira Flatow to talk about these advancements. Since his first appearance on Science Friday, Rice has testified before Congress about the importance of camping reservation equity, and has helped both federal and state campgrounds change their booking reservation windows.Transcripts for each segment will be available after the show airs on sciencefriday.com. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.