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George Dvorsky: Specialization is for Insects

Fourteen years ago, I sat down with George Dvorsky for almost 1 hour and 40 minutes. We argued about everything: transhumanism and the paleo diet, animal uplift and non-human person rights, mass extinction, SETI, and whether alien intelligence would be friendly or hostile.

One quote from that conversation has stayed with me ever since. Robert A. Heinlein:

“A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.”

In 2012, that sounded like a provocation. In 2026, in the age of AI, it sounds like a survival strategy. When machines out-specialize us at everything, what is left for humans? Perhaps precisely this: to be generalists. To be whole.

Was George right then? Is Heinlein right now?

Watch the full interview and judge for yourself: [ https://snglrty.co/4pU2ZtQ](https://snglrty.co/4pU2ZtQ)

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Layered crystal embeds atom-thin iron selenide can improve waste heat conversion

Developing thermoelectric materials that efficiently convert waste heat into electricity remains challenging because high electrical performance and low thermal conductivity are difficult to achieve simultaneously. Researchers at Science Tokyo developed a layered crystal, TlFe1.6 Se2, that embeds atomically thin iron selenide (FeSe) layers within a bulk material. The crystal combines a high thermoelectric power factor with exceptionally low thermal conductivity, demonstrating a promising strategy for designing next-generation materials for waste heat energy recovery.

Thermoelectric technology, which converts waste heat from factories, automobiles and power plants into electricity, is expected to play an important role in building a carbon-neutral society. In thermoelectric power generation, electricity is produced using a temperature difference across a material.

To achieve high power generation performance, materials must efficiently convert heat into electrical power while maintaining the temperature difference that drives power generation. However, these two requirements are generally difficult to satisfy simultaneously. Establishing new material design strategies that combine high thermoelectric performance with low thermal conductivity has therefore been a major challenge.

New imaging method tracks cancer from whole body to individual cells

One of the biggest challenges in cancer research has been linking the “big picture” seen in medical scans with the microscopic biology that drives tumor growth and dictates how patients respond to treatment. Now, by combining multiple imaging techniques (PET scans, bioluminescence and fluorescence), scientists can detect tumors across the whole body simultaneously, pinpoint key targets and then examine those tumors in detail, including the surrounding cells and tissue.

Study lead Professor David Lewis of the Cancer Research UK Scotland Institute and University of Glasgow said, This exciting technology allows us to build a clearer map of how cancer behaves at both a holistic and microscopic level.

It allows researchers to follow tumors in the body, identify the lesions that matter and then zoom in to study those cancer cells and their environment, giving us new information about cancer that we can take forward into better and more precise treatments.

Physical activity in infancy is associated with body composition at age three

The prevalence of obesity in the pediatric population is increasing, driven by a multifactorial etiology that includes genetic predisposition as well as both prenatal and postnatal influences. We aimed to explore associations between child physical activity (PA) at ages one and three years and body composition at age three. Furthermore, we investigated associations between maternal PA during pregnancy and child body composition at age three.

Mother-child pairs (n = 68) from a pregnancy PA intervention study were included. Children’s PA was assessed at one-and three-year follow-ups using 7-day accelerometry and categorized into 24-hour PA and daytime PA (6 a.m. – 8 p.m.). Child body composition was measured by Dual-energy X-ray absorptiometry and expressed as fat-free mass (FFM) and body fat percentage (BF%). Maternal moderate-to-vigorous intensity PA (MVPA) was measured using a commercial activity tracker. Associations between maternal and child PA and child body composition were examined using linear regression. Variables used for model adjustment included maternal pre-pregnancy body mass index, gestational weight gain, maternal educational level at baseline, parity, maternal age at baseline, child walking status at age one, child sex, and child age at the three-year follow-up.

We found a positive association between daytime PA at age one and child FFM at age three. Daytime PA at age three was positively associated with FFM, and 24-hour PA at age three was negatively associated with BF% and positively associated with FFM. A 10% increase in 24-hour PA was associated with approximately 400 g higher FFM. Maternal MVPA during pregnancy showed no association with child body composition at age three.

A nucleolar view of neuromuscular disease

The nucleolus is a master regulator of ribosome biogenesis and cellular homeostasis, as well as an increasingly key determinant of neuromuscular diseases. Across these conditions, diverse genetic and molecular lesions converge on alterations in nucleolar organization and function. These changes impact ribosomal RNA synthesis and reshape translational output, linking nuclear events to cytoplasmic protein homeostasis in disease-relevant contexts. In this review, we propose a comprehensive framework in which the nucleolus integrates RNA dysfunction, genome organization, and translational control across neuromuscular disorders. This perspective provides a conceptual basis for interpreting disease heterogeneity and highlights nucleolar pathways as potential, underexploited targets for therapeutic intervention.

Two hours of sleep restored: Researchers make Alzheimer’s breakthrough

There’s a small fire isolated in your kitchen. If you had the right tool, you might be able to put it out. But before you can, the sprinklers turn on and flood your entire house. An automatic response to an issue has now damaged everything you own.

That’s akin to what happens in the brains of people with Alzheimer’s: Amyloid plaques, sticky protein clumps that build up in the brain, are the fire in the kitchen. Microglia, the brain’s resident immune cells, are the sprinklers. A mechanism designed to protect the body ends up hurting it.

Researchers at the University of Kentucky have discovered this harmful process for the first time—and figured out how to turn it off.

Activation mechanism and structural assembly of the Mycobacterium tuberculosis ClpP1P2 protease and its associated ATPases

Weinhäupl et al. determine the cryo-EM structure of the ClpC1P1P2 complex from Mycobacterium tuberculosis, revealing an asymmetric architecture and selective activator binding. They show that molecular crowding promotes assembly and activation of Clp complexes, suggesting a mechanism for ClpP1P2 activation under physiological conditions.

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