https://www.dekut.com/World_Business/hydrogen-fuel-produced-at-lowest-cost-using-new-catalyst-/ Hydrogen is an energy dense and clean fuel. Upon combustion, hydrogen releases only water vapor. Historically, most hydrogen was produced from electrolysis which requires large amounts of electrical energy or from natural gas which results in excessive carbon-dioxide emissions. An alternative, clean method is to make hydrogen from water using carbon. Read more at 1888pressrelease.com . Tue, 13 Mar 2012 12:49:24 UTC en