MeFi: New material does passive cooling, i.e. no electricity needed.

New Spanish nanomaterial cools surfaces by up to 12.9C without electricity [snip]: The research, led by the Functional Nanoscale Devices for Energy (FINDER) group and published in the journal Nanophotonics, is based on daytime passive radiative cooling, a technique that exploits a peculiarity of the Earth's atmosphere: there is a band in the infrared spectrum, between 8 and 13 micrometres, through…