Article archive
Published news and blog articles, organized by category. Browse older coverage by month or search for a topic. Undated blog guides appear after dated news.
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Autophagy: How Your Cells Eat Themselves to Stay Alive
The Nobel Prize-winning process of cellular self-cannibalism clears damaged proteins and organelles, protects against neurodegeneration and cancer, and links fasting to longevity at the molecular level.
Mitochondria and Aging: The Power Plants That Run Down
Inside every cell, microscopic energy generators produce the ATP that keeps us alive — and the reactive oxygen species that slowly wear us out. The decline of these organelles is one of the deepest roots of aging.
Epigenetic Clocks: How Old Is Your DNA?
DNA methylation patterns reveal a biological age that can diverge sharply from the birthday count — and the gap predicts mortality, disease, and the pace at which we decline.
Stem Cells and Regenerative Medicine
Stem cells are not a magic repair kit. They are a family of cells with different powers, risks, and clinical evidence—and regenerative medicine succeeds when biology meets careful delivery.
Caloric Restriction and Lifespan Extension
Calorie restriction is a powerful longevity hypothesis—but human evidence points to a narrower claim: improved health markers are more established than a guaranteed longer life.
How Calculus Shapes the Modern World
Calculus is the quiet operating system beneath motion, signals, optimization, and prediction—from orbital navigation to the models that make modern engineering possible.
Chaos Theory and the Butterfly Effect
Why a deterministic system can remain unpredictable, how Lorenz found it in a weather model, and what the mathematics says about prediction.
Parabiosis and the Young-Blood Problem
A stitched-together mouse pair changed how researchers think about aging—but the laboratory result is much narrower than the fountain-of-youth headline.
Metformin and the Anti-Aging Question
An old diabetes drug has become a longevity hypothesis. Here is what the animal models, human evidence, and TAME trial can—and cannot—support.
Rapamycin and mTOR: The Bacterial Compound That Rewrote Aging Biology
Discovered in Easter Island soil, rapamycin inhibits mTOR, a central regulator of growth and nutrient sensing. From transplant medicine to lifespan extension in mice, its story links cellular recycling to the biology of aging.
The Alignment Problem: Why Building AI That Wants What We Want Is Hard
AI alignment asks whether a system’s objectives match human intentions. From Goodhart’s law to mesa-optimizers, the difficulty is that proxy goals and true goals diverge — often exactly where capability makes the system effective.
Reinforcement Learning from Human Feedback: The Engine That Aligned ChatGPT
RLHF turned raw language models into helpful assistants by learning a reward model from human preferences, then optimizing a policy against it. The method works — and inherits the limits of its proxy.
Diffusion Models and AI Image Generation
How a model turns noise into an image: forward corruption, learned denoising, latent representations, and the conditioning signals that make text-to-image systems work.
NAD+ and Sirtuins in Aging
NAD+ is both a metabolic coenzyme and fuel for signaling enzymes. That makes sirtuins fascinating—and makes simple anti-aging claims hard to justify.
Senolytics: Clearing the Zombie Cells
Senescent cells can protect tissue and also poison its neighborhood. The science of senolytics is the search for selective clearance—not a shortcut to immortality.
Brain-Computer Interfaces and Neuralink
What a BCI actually measures, how Neuralink’s threads and robot fit the signal chain, and why clinical durability matters more than viral demos.
How Neuromorphic Computing Works
Brain-inspired chips replace constant clocked movement with sparse events, local memory, and time-aware computation.
How Graph Theory Powers Networks: From Bridges to Six Degrees
Every network is a graph waiting to be modeled. Vertices, edges, paths, hubs, and clusters turn social links, web pages, roads, and machine learning into analyzable structure.
The Collatz Conjecture: A Tiny Rule With No Known Ending
The 3n + 1 problem is easy to state, easy to test, and still open. Its hailstone orbits expose the gap between overwhelming evidence and a proof about every integer.
Gödel’s Incompleteness Theorems: The Boundary of Proof
Gödel did not break mathematics. He proved that any effective system powerful enough to describe arithmetic leaves truths it cannot prove—and cannot certify from inside itself.
How 3D Printing Is Changing Manufacturing
Additive manufacturing is not simply a cheaper way to make the same part. It changes the economics of tooling, inventory, geometry, customization, and repair by moving production from a fixed mold to a digital process plan.
The Economics of GPUs and the AI Chip Supply Chain
An AI accelerator is the visible end of a long chain: architecture, EDA software, advanced lithography, wafer capacity, HBM memory, packaging, networking, servers, and power. Scarcity at any link can set the price of the whole system.
How Quantum Computers Actually Compute
Superposition does not mean a quantum machine tries every answer at once. The useful trick is shaping amplitudes, using entanglement as structure, and measuring only after interference has made the right outcomes more likely.
Telomeres and the Countdown of Cellular Aging
Telomeres are the protective caps at the ends of chromosomes that shorten with each cell division. Their discovery reshaped how science understands aging at the molecular level.
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