"Economics dictates that 95% of current U.S. hydrogen is produced by steam-methane re-forming of non-renewable natural gas, " Michael K. Heiman, professor of environmental studies at Dickinson College, wrote in a study of the proposed hydrogen economy last year.
The material can heal within minutes of cuts through fast-forming hydrogen bonds, rivaling some of its peers, but also includes nanoscopic nickel particles that keep a current flowing and even respond to flexing or pressure.