How can you extract hydrogen?

Hydrogen can be extracted through various methods, with the most common being steam methane reforming (SMR), where natural gas is reacted with steam to produce hydrogen and carbon dioxide. Another method is electrolysis, where water is split into hydrogen and oxygen using electricity, ideally from renewable sources for a greener approach. Other techniques include gasification of biomass and thermochemical water splitting, but these are less widely used. Each method varies in efficiency, cost, and environmental impact.