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Molecule stores sunlight and releases heat on demand — Level B2 — a close up of a piece of luggage in ice
24 Feb 2026

Molecule stores sunlight and releases heat on demand

Chemists at UC Santa Barbara designed a modified molecule called pyrimidone that captures sunlight, stores it in chemical bonds and releases it as heat when triggered. Tests released enough heat to boil water under normal conditions.

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Photo by Hakii official, Unsplash

Metal tubes that do not sink — Level B2 — Metallic arches rise from water against mountains.
4 Feb 2026

Metal tubes that do not sink

Researchers developed treated metal tubes whose inner surface traps air and stays dry, so the tubes float even in rough water. The design could lead to floating rafts for ships, buoys and wave energy devices.

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Why Rechargeable Batteries Lose Performance — Level B2 — a pile of wood
20 Dec 2025

Why Rechargeable Batteries Lose Performance

Researchers found that repeated charging and discharging makes batteries expand and contract, causing tiny shape changes and stress. This “chemomechanical degradation” and spreading strain reduce performance and shorten battery life, and imaging revealed how it happens.

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