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)
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

The world's 'whitest white paint' could replace the need for air-conditioning by reflecting 98 per cent of sunlight