Scientists have developed a new kind of material inspired by the wings of a butterfly that could be used for passively cooling buildings. The material consists of a thin layer of butterfly wings, coated with a layer of carbon nanotubes that reflect sunlight while emitting heat in the form of infrared radiation. This allows the material to cool buildings without the need for energy-intensive air conditioning. The material is both highly effective and aesthetically pleasing, making it an attractive choice for architects and engineers looking for solutions to reduce energy use.

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source: Phys.org