Tom Grizzetti was looking for his next investment six years ago. The search took him to the University of Salento in the historic city of Lecce in Italy, known as the Florence of the South. Grizzetti and his business partner, Irishman Ed Coleman, were looking to meet Professor Arturo De Risi and his team of materials science experts that were working on a product that the two veteran investors believed could change the world. That revolution was not expected to happen in a dramatic or public way but out of sight in the vast heating, ventilation and air conditioning systems…

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