Hydrogen- an Element that Needs to be Isolated. Hydrogen is the most abundant chemical element in the universe. It is found in the composition of the sun, the stars, and gas planets. However, it is more rarely found on Earth and in the Earth's atmosphere.

While hydrogen is plentiful throughout the Universe and on Earth, it is almost always combined with other elements. Before it can be turned into an energy vector, it has to be produced. This requires the use of various energy sources - including renewable ones - and processes. Hydrogen will eventually be used in  fuel cells or combustion engines.

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