The Hydrogen Rush

It can be white, green, blue, pink or grey. It can be produced by natural gases, renewable energies, coal, nuclear power, and carbon capture. It stores and transports electricity. What is it? 
Hydrogen!
Since the beginning of the war in Ukraine and the European search for alternative energy sources, this chemical element has gained lots of attention. Some politicians and researchers even dare to describe it as the future fuel of Europe. 
But what exactly is hydrogen? 
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