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Light-Powered AI Chips: The Photonic Revolution That’s About to Change Everything

Light-Powered AI Chips: The Photonic Revolution That’s About to Change Everything ## The future of artificial intelligence (AI) may be revolutionized by photonic AI chips that use light instead of electricity to process information, enabling faster, more efficient, and heat-free computing.

## Questions to inspire discussion.

Photonic AI Technology.

🔬 Q: What makes photonic AI chips more efficient than current AI chips? A: Photonic AI chips are 100x more energy efficient and produce virtually zero heat compared to electronic chips, as they use light instead of electrons for computation.

🌈 Q: How do photonic chips encode information differently? A: Photonic chips can encode information simultaneously in wavelength, amplitude, and phase by bouncing light off mirrors and optical devices, replacing traditional electronic processors.

Industry Developments.

Continue reading “Light-Powered AI Chips: The Photonic Revolution That’s About to Change Everything” | >

Space Habitat Clusters & Conglomerations

Space isn’t just for lonely colonies—it’s for communities. Join us as we imagine constellations of space habitats bound by tethers, trade, and trust, building not just homes in the stars but entire civilizations.

Watch my exclusive video The Economics of Immortality: https://nebula.tv/videos/isaacarthur–…
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Credits:
Space Habitat Clusters & Conglomerations.
Written, Produced & Narrated by: Isaac Arthur.
Graphics: Jarred Eagley, Jeremy Jozwik, Udo Schroeter.
Select imagery/video supplied by Getty Images.
Music Courtesy of Stellardrone and Epidemic Sound http://epidemicsound.com/creator.

Chapters.
0:00 Intro.
1:13 Why Clustered Habitats?
6:00 Habitat Types and Roles Within Clusters.
9:41 Mobility and Modularity – The Politics of Moveable Worlds.
14:02 Tethers, Transit, and Shared Infrastructure.
17:35 Shapes of Clusters and Dynamic Conglomerations.
23:43 Nebula.
25:21 Digital Ecosystems and Cultural Identity.
25:19 Economics and Trade in Habitat Constellations.
26:52 Education and Intergenerational Planning.
28:17 Security and Conflict Management.
29:10 A Tale of Unity.
32:29 Religion, Ritual, and Meaning.
33:19 The Long View: Legacy and Civilization.
34:07 Closing Reflections

Differences in brain chemistry shape two common movement disorders

Researchers have identified a neurochemical signature that sets Parkinson’s disease apart from essential tremor — two of the most common movement disorders, but each linked to distinct changes in the brain.

In a new study in Nature Communications, scientists identified unique chemical signaling patterns of two key neurotransmitters — dopamine and serotonin — that distinguish these two disorders.

“This study builds on decades of work,” said a co-senior author, who with colleagues developed the multi-faceted technologies and the theoretical constructs for the work over their 15 years at the research institute.

Google DeepMind discovers new solutions to century-old problems in fluid dynamics

For centuries, mathematicians have developed complex equations to describe the fundamental physics involved in fluid dynamics. These laws govern everything from the swirling vortex of a hurricane to airflow lifting an airplane’s wing.

Experts can carefully craft scenarios that make theory go against practice, leading to situations which could never physically happen. These situations, such as when quantities like velocity or pressure become infinite, are called ‘singularities’ or ‘blow ups’. They help mathematicians identify fundamental limitations in the equations of fluid dynamics, and help improve our understanding of how the physical world functions.

In a new paper, we introduce an entirely new family of mathematical blow ups to some of the most complex equations that describe fluid motion. We’re publishing this work in collaboration with mathematicians and geophysicists from institutions including Brown University, New York University and Stanford University.

New drug could be first to stop deadly fatty liver disease

Scientists at UC San Diego have identified a new drug, ION224, that could transform the treatment of MASH, a dangerous form of fatty liver disease tied to obesity and diabetes. By blocking a key liver enzyme, the drug reduces fat and inflammation, halting the root causes of liver damage. In a year-long clinical trial, patients showed major improvements without serious side effects, offering hope to millions affected worldwide.

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Hi everybody. I’m writing to you because we are reaching an important moment in our reproduction of Harold Katcher’s seminal study of rats rejuvenation, in which we are only 9 months from starting the injections but we raised 71% of the total cost of the experiment. We already published the article of our 2024 experiment in a peer-reviewed journal (https://journals.tmkarpinski.com/index.php/ejbr/article/view/772), in which we injected the Pig Plasma Extracellular Particles (PPEPs) in young rats to assess a potential acute immunogenicity or toxicity — without any negative effect observed. Nina Torres Zanvettor (cofounder of ICR together with me) and I were interviewed some weeks ago by Eleanor Sheekey in her YouTube channel (https://youtu.be/Q-lS1UMHG1o?si=ImDWycjM8r8-KpyF), as we are trying to spread the word about the experiment and the crowdfunding. We are making the experiment in collaboration with Unicamp university and Dr. Marcelo Mori, a world-class aging scientist. The rats are already aging in the university facility and we are preparing the epigenetic age measurements with Horvath’s foundation (Clock Foundation), but we still have to raise 29% (US$21,000) of the total cost (US$75,000).

(https://youtu.be/Q-lS1UMHG1o

We will publish everything (methods, materials and results) immediately, but we need the help of the community too, as we will give back all the information for the community. Could you help us to fund the study? Any amount is important. The link to make a donation is https://www.rejuvenescimento.org/donation. I don’t even consider it precisely a “donation”, but a financial collaboration, as the “donor” would be able to use the information, and maybe they can also use the rejuvenation technology that some day would arise from this research. By the way, if we manage to rejuvenate the rats, we will then try to keep them young as long as we can, in a longevity experiment. Also, if we rejuvenate the rats, we will carry out a safety experiment in a Good Laboratory Practices facility here in Brazil that would allow regulatory approval to try the therapy in human patients who don’t have any other alternative to be kept alive — we expect to be able to carry out those human trials in 2028. So we intend to go all the way to the clinic, if we confirm Katcher’s results.

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