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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.

Photo by Nigel Hoare, Unsplash

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.