By Jack MoneyBusiness writer jmoney@oklahoman.comMaking gas out of grass isn’t easy. But researchers at the University of Oklahoma and University of Tulsa have discovered a way to double or maybe triple the speed at which they can make a chemical that’s used as a building block for fuel. Water, they announced, is key, but perhaps not in a way you would expect. “Energy and water are interconnected in the production of renewable fuels,” said Daniel Resasco, professor at OU’s School of Chemical, Biological and Materials Engineering at the Gallogly College of Engineering. “On the one hand, energy is needed to extract, purify and distribute water (from the fuel).Read more on NewsOK.com