Editing The Hydrogen Economy (section)

== <span style="color: #FFFFFF;">Remembering</span> ==
* '''Hydrogen Economy''' — A proposed system where "Hydrogen" is used as the "Fuel" for a "Zero-Emission" society.
* '''Electrolysis''' — (See Article 155). Using "Electricity" to "Split Water" ($H_2O$) into "Hydrogen" ($H_2$) and "Oxygen" ($O_2$).
* '''Green Hydrogen''' — Hydrogen produced using **Renewable Energy** (Solar/Wind) through "Electrolysis." (Zero emissions).
* '''Blue Hydrogen''' — Hydrogen produced from **Natural Gas** (Methane) where the **CO2** is "Captured and Stored" (CCS).
* '''Grey Hydrogen''' — Hydrogen produced from **Natural Gas** without CCS. (High emissions - The 'Current' standard).
* '''Fuel Cell''' — A "Device" that "Combines" "Hydrogen and Oxygen" to "Create" "Electricity," with "Water" as the "Only Waste Product."
* '''Energy Density''' — The "Amount of Energy" per "Unit of Mass": Hydrogen has **3x** the energy of gasoline by mass, but is "Extremely Bulky" by volume.
* '''Cryogenic Storage''' — Storing hydrogen as a "Liquid" at **-253°C** (Near absolute zero).
* '''Ammonia''' ($NH_3$) — A "Carrier" for hydrogen: it is "Easier to Liquidize" and "Transport" in "Ships."
* '''Proton Exchange Membrane''' (PEM) — A "Technology" for "Electrolyzers" and "Fuel Cells" that allows for "Fast Response" to "Variable Power" (like 'Wind').
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