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Light controls a calcium-powered protein engine for artificial cells — Level B2 — Abstract molecular structure with blue lines
26 Apr 2026

Light controls a calcium-powered protein engine for artificial cells

Researchers adapted a ciliate calcium-pulse strategy to make a protein network that contracts when calcium is released by light. The light-controlled system can repeat cycles, move tiny particles and may help synthetic drug delivery.

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Photo by Nigel Hoare, Unsplash

AI models encode real-world plausibility — Level B2 — Ai letters on a glowing orange and blue background
26 Apr 2026

AI models encode real-world plausibility

Researchers at Brown University tested whether modern AI language models can tell if events are common, unlikely, impossible or nonsensical. They used mechanistic interpretability and found internal patterns that match human judgments in several open-source models.

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When a Star Is Torn Apart by a Black Hole — Level B2 — A black hole with a bright blue accretion disk.
26 Apr 2026

When a Star Is Torn Apart by a Black Hole

A new study explains how a star that wanders too close to a supermassive black hole is stretched into a thin debris stream. Collisions and later accretion make bright flares called tidal disruption events (TDEs), which simulations now model in detail.

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Why tiny particles make rubber stronger — Level B2 — bunch of tires
26 Apr 2026

Why tiny particles make rubber stronger

A University of South Florida team used large computer simulations to solve why microscopic particles reinforce rubber. They found a Poisson’s ratio mismatch makes rubber stiffer and stronger, with implications for tires and other industries.

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AI and racial bias at US borders — Level B2 — a group of people in a large room with a large screen
25 Apr 2026

AI and racial bias at US borders

Rights groups warn that AI is increasingly used in US border control and can deepen racial discrimination. A 2023 report to the UN says some systems harm migrants and calls for bans, oversight and diverse participation.

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