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Gravity shapes our universe, but could we one day shape gravity? Join us as we explore the possibilities of gravity technology, from artificial gravity and interstellar travel to terraforming and cosmic engineering.

Watch my exclusive video Big Alien Theory https://nebula.tv/videos/isaacarthur–… Nebula using my link for 40% off an annual subscription: https://go.nebula.tv/isaacarthur Get a Lifetime Membership to Nebula for only $300: https://go.nebula.tv/lifetime?ref=isa… Use the link gift.nebula.tv/isaacarthur to give a year of Nebula to a friend for just $30. Visit our Website: http://www.isaacarthur.net Join Nebula: https://go.nebula.tv/isaacarthur Support us on Patreon: / isaacarthur Support us on Subscribestar: https://www.subscribestar.com/isaac-a… Facebook Group: / 1,583,992,725,237,264 Reddit: / isaacarthur Twitter: / isaac_a_arthur on Twitter and RT our future content. SFIA Discord Server: / discord Credits: Black Sun Rising: Living On A Planet Around A Black Hole Credits: Gravity Tech Episode 488; February 27, 2025 Written, Produced & Narrated by: Isaac Arthur Editor: Donagh Broderick Graphics: Jeremy Jozwik, LegionTech Studios, Sergio Botero Select imagery/video supplied by Getty Images Music Courtesy of Epidemic Sound http://epidemicsound.com/creator Phase Shift, “Forest Night” Chris Zabriskie, “Unfoldment, Revealment”, “A New Day in a New Sector”, Stellardrone, “Red Giant”, “Billions and Billions“
Get Nebula using my link for 40% off an annual subscription: https://go.nebula.tv/isaacarthur.
Get a Lifetime Membership to Nebula for only $300: https://go.nebula.tv/lifetime?ref=isa…
Use the link gift.nebula.tv/isaacarthur to give a year of Nebula to a friend for just $30.

Visit our Website: http://www.isaacarthur.net.
Join Nebula: https://go.nebula.tv/isaacarthur.
Support us on Patreon: / isaacarthur.
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Twitter: / isaac_a_arthur on Twitter and RT our future content.
SFIA Discord Server: / discord.
Credits:
Black Sun Rising: Living On A Planet Around A Black Hole.
Credits:
Gravity Tech.
Episode 488; February 27, 2025
Written, Produced & Narrated by: Isaac Arthur.
Editor: Donagh Broderick.
Graphics: Jeremy Jozwik, LegionTech Studios, Sergio Botero.

Select imagery/video supplied by Getty Images.
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator.
Phase Shift, \

Read more | >

Could a planet orbiting a black hole sustain life? We dive into the challenges and wonders of living in such an extreme cosmic environment. Discover what it might be like to live near a black hole, where time slows, gravity warps, and the universe takes on a truly alien form.

Watch my exclusive video Big Alien Theory https://nebula.tv/videos/isaacarthur–… Nebula using my link for 40% off an annual subscription: https://go.nebula.tv/isaacarthur Get a Lifetime Membership to Nebula for only $300: https://go.nebula.tv/lifetime?ref=isa… Use the link gift.nebula.tv/isaacarthur to give a year of Nebula to a friend for just $30. Visit our Website: http://www.isaacarthur.net Join Nebula: https://go.nebula.tv/isaacarthur Support us on Patreon: / isaacarthur Support us on Subscribestar: https://www.subscribestar.com/isaac-a… Facebook Group: / 1,583,992,725,237,264 Reddit: / isaacarthur Twitter: / isaac_a_arthur on Twitter and RT our future content. SFIA Discord Server: / discord Credits: Black Sun Rising: Living On A Planet Around A Black Hole Episode 487; February 20, 2025 Written, Produced & Narrated by: Isaac Arthur Editor: Briana Brownell Graphics: Jeremy Jozwik, Ken York YD Visual, Udo Scroeter Select imagery/video supplied by Getty Images Music Courtesy of Epidemic Sound http://epidemicsound.com/creator Phase Shift, “Forest Night” Chris Zabriskie, “Unfoldment, Revealment”, “A New Day in a New Sector”, “Oxygen Garden” Stellardrone, “Red Giant”, “Billions and Billions“
Get Nebula using my link for 40% off an annual subscription: https://go.nebula.tv/isaacarthur.
Get a Lifetime Membership to Nebula for only $300: https://go.nebula.tv/lifetime?ref=isa…
Use the link gift.nebula.tv/isaacarthur to give a year of Nebula to a friend for just $30.
Visit our Website: http://www.isaacarthur.net.
Join Nebula: https://go.nebula.tv/isaacarthur.
Support us on Patreon: / isaacarthur.
Support us on Subscribestar: https://www.subscribestar.com/isaac-a…
Facebook Group: / 1583992725237264
Reddit: / isaacarthur.
Twitter: / isaac_a_arthur on Twitter and RT our future content.
SFIA Discord Server: / discord.
Credits:
Black Sun Rising: Living On A Planet Around A Black Hole.
Episode 487; February 20, 2025
Written, Produced & Narrated by: Isaac Arthur.
Editor: Briana Brownell.
Graphics: Jeremy Jozwik, Ken York YD Visual, Udo Scroeter.
Select imagery/video supplied by Getty Images.
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator.
Phase Shift, \

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Riverworld.

Imagine a world stretched along a single, endless river inside a colossal space megastructure. Explore the fascinating concept of the Topopolis, a futuristic habitat billions of miles long, where humanity might thrive in a sprawling civilization bound by physics, engineering, and imagination.

Watch my exclusive video Big Alien Theory https://nebula.tv/videos/isaacarthur–… Nebula using my link for 40% off an annual subscription: https://go.nebula.tv/isaacarthur Get a Lifetime Membership to Nebula for only $300: https://go.nebula.tv/lifetime?ref=isa… Use the link gift.nebula.tv/isaacarthur to give a year of Nebula to a friend for just $30. Visit our Website: http://www.isaacarthur.net Join Nebula: https://go.nebula.tv/isaacarthur Support us on Patreon: / isaacarthur Support us on Subscribestar: https://www.subscribestar.com/isaac-a… Facebook Group: / 1,583,992,725,237,264 Reddit: / isaacarthur Twitter: / isaac_a_arthur on Twitter and RT our future content. SFIA Discord Server: / discord Credits: Topopolis: The Eternal River Episode 487a; February 23, 2025 Written, Produced & Narrated by: Isaac Arthur Graphics: Apogii.uk, Ken York YD Visual, Steve Bowers, Udo Scroeter Select imagery/video supplied by Getty Images Music Courtesy of Epidemic Sound http://epidemicsound.com/creator.
Get Nebula using my link for 40% off an annual subscription: https://go.nebula.tv/isaacarthur.
Get a Lifetime Membership to Nebula for only $300: https://go.nebula.tv/lifetime?ref=isa…
Use the link gift.nebula.tv/isaacarthur to give a year of Nebula to a friend for just $30.
Visit our Website: http://www.isaacarthur.net.
Join Nebula: https://go.nebula.tv/isaacarthur.
Support us on Patreon: / isaacarthur.
Support us on Subscribestar: https://www.subscribestar.com/isaac-a…
Facebook Group: / 1583992725237264
Reddit: / isaacarthur.
Twitter: / isaac_a_arthur on Twitter and RT our future content.
SFIA Discord Server: / discord.
Credits:
Topopolis: The Eternal River.
Episode 487a; February 23, 2025
Written, Produced & Narrated by: Isaac Arthur.
Graphics: Apogii.uk, Ken York YD Visual, Steve Bowers, Udo Scroeter.
Select imagery/video supplied by Getty Images.
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator

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Ancient texts warn of love turning into hatred, as seen in stories like Cain and Abel or “Et tu, Brute?” This talk explores the neurobiology of hatred based on the biology of love: the oxytocin system, attachment networks, and biobehavioral synchrony, which mature through mother-infant bonding and later support group solidarity and out-group hostility. Using this model, we developed Tools of Dialogue© for Israeli and Palestinian youth. After 8 sessions, participants showed reduced hostility, increased empathy, hormonal changes (lower cortisol, higher oxytocin), and lasting attitudes of compromise. Seven years later, these changes supported their peacebuilding efforts, showing how social synchrony can transform hatred into reciprocity and cooperation. Recorded on 02/14/2025. [Show ID: 40386]

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Learn more about anthropogeny on CARTA’s website:
https://carta.anthropogeny.org/

Explore More Humanities on UCTV
(https://www.uctv.tv/humanities)
The humanities encourage us to think creatively and explore questions about our world. UCTV explores human culture through literature, history, ethics, philosophy, cinema and religion so we can better understand the human experience.

Explore More Science & Technology on UCTV
(https://www.uctv.tv/science)
Science and technology continue to change our lives. University of California scientists are tackling the important questions like climate change, evolution, oceanography, neuroscience and the potential of stem cells.

UCTV is the broadcast and online media platform of the University of California, featuring programming from its ten campuses, three national labs and affiliated research institutions. UCTV explores a broad spectrum of subjects for a general audience, including science, health and medicine, public affairs, humanities, arts and music, business, education, and agriculture. Launched in January 2000, UCTV embraces the core missions of the University of California — teaching, research, and public service – by providing quality, in-depth television far beyond the campus borders to inquisitive viewers around the world.

Continue reading “CARTA: The Biology of Hatred: Why Love Turns to Hatred and What We Can Do About It” | >

Head to https://squarespace.com/artem to save 10% off your first purchase of a website or domain using code ARTEMKIRSANOV

Socials:
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Patreon: / artemkirsanov.

My name is Artem, I’m a graduate student at NYU Center for Neural Science and researcher at Flatiron Institute.

In this video video we are exploring a fascinating paper which revealed the role of biological constraints on what patterns of neural dynamics the brain and cannot learn.
Link to the paper: https://www.nature.com/articles/s4159… small correction: I didn’t mention in this in the video, but the dimensionality-reduction process for BCI was two-stage. First, the source 90D neural activity was non-linearly projected to 10 using Factor analysis, and only after that 2D projections of this 10D space were shown as cursor positions. It doesn’t change the interpretation of the result, just wanted to be more technically correct about the methods. Outline: 00:00 Introduction 01:01 Temporal sequences 02:10 The experimental challenge 4:42 Biofeedback and BCIs as a research tool 7:30 Sponsor: Squarespace 8:44 Experimental setup 11:36 Two 2D projections of neural activity 12:53 Switching BCI mapping reveals activity constraints 14:46 Conclusion Icons by Freepik and Biorender Music by Artlist.

A small correction: I didn’t mention in this in the video, but the dimensionality-reduction process for BCI was two-stage. First, the source 90D neural activity was non-linearly projected to 10 using Factor analysis, and only after that 2D projections of this 10D space were shown as cursor positions. It doesn’t change the interpretation of the result, just wanted to be more technically correct about the methods.

Outline:

Continue reading “Are There Limits What Brains Can Learn?” | >

And understanding these waves a little better could help scientists better predict when and where they’ll happen, as well as how strong they’ll be. That could be vital to the safety of satellites orbiting our planet, which are vulnerable to solar storms and other sudden bursts of radiation from deep space.

“These high-energy electrons are known as ‘killer electrons’ because they have damaged several satellites, costing hundreds of millions of dollars,” wrote Horne. “Chorus waves are now included in forecasting models that are designed to protect these satellites.”

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About 15 years ago, Stanford Medicine neuro-oncologist Michelle Monje, MD, PhD, began to suspect that the brain tumors she studied were doing something strange. Cancer cells sometimes copycat their healthy counterparts, so Monje and her team weren’t surprised to uncover simple parallels between healthy and malignant brain cells. The cancer’s biological “borrowing” was similar to a symphony-goer who whistles the theme from a concerto on the bus ride home.

But the team’s data hinted that these brain tumors were orchestrating something much more complex. Instead of just humming the themes of healthy brain biology, the research suggested the tumors could round up many important cell-signaling instruments — the microscopic equivalents of, say, violins, cellos, flutes and trombones — and use them to play a score of its own.

In physiologic terms, Monje’s team gradually demonstrated, certain cancer cells form working electrical connections with nearby nerves. The tumors wire themselves neatly into the brain’s electrical apparatus, then use healthy nerves’ signals for their own purposes — to drive malignant growth. These cancers also hijack the machinery of learning to strengthen connections with the healthy brain and further enhance their ability to multiply.

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Interesting item on biological clocks, and other things.

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Here Liz talks about her personal experience with gene therapy and the innovations, the state of the industry and what the future holds. The therapies exist why is it so difficult to make them available!?
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⏲️Chapters.
00:00 Liz’s interventions.
12:40 Biological age tests and meaning.
19:39 The paradigm of disease.
23:30 Telomere results.
26:00 Has she tried other therapies.
30:20 Getting gene therapy now.
40:50 Investment in longevity.
47:10 CMV
50:40 Archie’s requirement for gene therapy.
54:00 What is the future of BioViva & Gene therapy.
1:01:00 Further information.

🌐Links in this video.

Continue reading “Telomeres Lengthened by 47% & Continue to Grow with Gene Therapy” | >