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New Warp-Drive Propulsion Concept Moves Fictional Starships Closer to Engineering Reality

A new warp-drive study proposes a novel segmented design that could sidestep many of the problems in the original decades-old concept, bringing the possibility of hyper-fast space travel one step closer to becoming a reality.

Warp drive theory has quickly evolved since the mid-90s, when a concept developed by Mexican physicist Miguel Alcubierre was first described in a landmark paper that provided a scientific basis for hyper-fast travel within general relativity.

While the concept of warp drives was initially popularized in the futuristic realm depicted in Star Trek, Alcubierre took the idea to paper, shaping the fictional idea into a conceptual reality—one that, someday, could potentially also be realized through advanced engineering.

Scale of living things

Neal Agarwal published another gift to the internet with Size of Life. It shows the scale of living things, starting with DNA, to hemoglobin, and keeps going up.

The scientific illustrations are hand-drawn (without AI) by Julius Csotonyi. Sound & FX by Aleix Ramon and cello music by Iratxe Ibaibarriaga calm the mind and encourage a slow observation of things, but also grow in complexity and weight with the scale. It kind of feels like a meditation exercise.

See also: shrinking to an atom, the speed of light, and of course the classic Powers of Ten.

Magic moments with John Bell

This was a monumental breakthrough in the philosophy and foundations of quantum mechanics. Bell derived a mathematical inequality that showed if there were any local “hidden variables” (underlying, deterministic factors) explaining the “spooky” correlations in quantum entanglement, those correlations would have to obey certain limits. Experiments inspired by his theorem (starting with Alain Aspect in the early 1980s) have repeatedly shown that these limits are violated, confirming that quantum entanglement is real, non-local, and that nature fundamentally disagrees with Einstein’s idea of “local realism.”

John Bell, with whom I had a fruitful collaboration and warm friendship, is best known for his seminal work on the foundations of quantum physics, but he also made outstanding contributions to particle physics and accelerator physics.

Antibacterial and Immunostimulatory Activity of Potential Probiotic Lactic Acid Bacteria Isolated from Ethiopian Fermented Dairy Products

Lactic acid bacteria (LAB) form a group of bacteria to which most probiotics belong and are commonly found in fermented dairy products. Fermented foods and beverages are foods made through desired microbial growth and enzymatic conversions of food components. In this study, 43 LAB were isolated from Ethiopian traditional cottage cheese, cheese, and yogurt and evaluated for their functional and safety properties as candidate probiotics. Twenty-seven isolates, representative of each fermented food type, were selected and identified to the species level. Limosilactobacillus fermentum was found to be the predominant species in all samples studied (70.4%), while 11.1% of isolates were identified as Lactiplantibacillus plantarum. All 27 isolates tested showed resistance to 0.5% bile salt, while 26 strains were resistant to pH 3.

Study reveals visual processing differences in dyslexia extend beyond reading

New research published in Neuropsychologia provides evidence that adults with dyslexia process visual information differently than typical readers, even when viewing non-text objects. The findings suggest that the neural mechanisms responsible for distinguishing between specific items, such as individual faces or houses, are less active in the dyslexic brain. This implies that dyslexia may involve broader visual processing differences beyond the well-known difficulties with connecting sounds to language.

Dyslexia is a developmental condition characterized by significant challenges in learning to read and spell. These difficulties persist despite adequate intelligence, sensory abilities, and educational opportunities. The most prominent theory regarding the cause of dyslexia focuses on a phonological deficit. This theory posits that the primary struggle lies in processing the sounds of spoken language.

According to this view, the brain struggles to break words down into their component sounds. This makes mapping those sounds to written letters an arduous task. However, reading is also an intensely visual activity. The reader must rapidly identify complex, fine-grained visual patterns to distinguish one letter from another.

Tricking tumors into marking themselves for destruction with focused ultrasound

USC biomedical engineers have found a way to make a solid tumor paint a target on its own back in order to train the body’s immune system to find and destroy it.

The research team from USC Viterbi’s Wang Lab used focused ultrasound waves to “prime” tumor cells so they can be more easily recognized and attacked by chimeric antigen receptor (CAR) T-cells, the engineered immune cells that have revolutionized treatment for blood cancers but have until now struggled against solid tumors. The research has been published in Nature Materials.

CAR T-cell therapy works remarkably well in the bloodstream, where rogue cancer cells are exposed and easily targeted. However, solid tumors are another story. They hide deep in tissue, shielded by a microenvironment fortress of healthy cells. Every tumor is different, making it hard to find a single “flag” that marks cancer cells without causing damage to healthy ones.

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