Colorful films could help buildings, cars keep their cool

The cold blast of an air conditioner can be a welcome relief as temperatures soar, but “A/C” units require large amounts of energy and can leak potent greenhouse gases. Today, scientists report an eco-friendly alternative — a plant-based film that gets cooler when exposed to sunlight and comes in a variety of textures and bright, iridescent colors. The material could someday keep buildings, cars and other structures cool without requiring external power.

Sylvia Vignolini, Ph.D.
University of Cambridge

Qingchen Shen, Ph.D.
University of Cambridge

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