Many observers believe that using

hydrogen

The simplest and lightest atom, the most abundant element in the universe.

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as an

energy carrier

A synonym of secondary energy (see definition).

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holds out significant energy potential.

Fuel

Fuel is any solid, liquid or gaseous substance or material that can be combined with an oxida...

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cells, which are powered by a fuel such as hydrogen to produce

electricity

Form of energy resulting from the movement of charged particles (electrons) through a conduct...

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, are the foundations of this future pathway. How do they work?