News flash: Though the Earth is warming at a hellish pace, outer space is still freezing cold.

And since cooling systems account for 17 percent of electricity use worldwide, it occurred to professor Aaswath Raman, an assistant prof at Penn’s School of Engineering and Applied Science and a prominent voice in the nascent field of radiative cooling, that beaming heat emissions to space could help lower greenhouse gas emissions.

As part of his Ph.D. research at Stanford, Raman devised a multilayer optical material 40 times thinner than a human hair that’s able to avoid getting heated up by the sun while beaming out its own heat to outer space through a precise infrared frequency. Alongside cofounders Eli Goldstein and Shanhui Fan, Raman started a company to develop the technology and bring it to market.

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