I caught a presentation by Ana Gonzalez Hernandez, who is leading Emerson’s Environmental Sustainability programs globally across Emerson. She opened noting some of the key characteristics of this promising decarbonization solution: hydrogen is the most abundant molecule in the universe, it is the lightest element and so has low energy density per unit volume; it is a non-toxic, non-metallic, odorless, colorless and a highly combustible diatomic gas.