Xiulin Ruan, a Purdue University professor of mechanical engineering, holds up his lab’s sample of the whitest paint on record. Purdue University / Jared Pike Scientists at the University of Purdue have developed the whitest and coolest paint on record. Painting buildings white to help cool down cities has long been touted as a climate solution . However, the white paints currently on the market reflect only 80 to 90 percent of sunlight and cannot actually cool a roof to below air temperature, The Guardian reported . However, this new paint can. "Our paint can help fight against global warming by helping to cool the Earth – that’s the cool point," University of Purdue Professor Xiulin Ruan told The Guardian. "Producing the whitest white means the paint can reflect the maximum amount of sunlight back to space." The new paint, introduced in ACS Applied Materials & Interfaces on Thursday, can reflect up to 98.1 percent of sunlight and cool surfaces by 4.5 degrees Celsius. This means it could be an effective replacement for air conditioning. "If you were to use this paint to cover a roof area of about 1,000 square feet, we estimate that you could get a […]
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