Those interested in this topic may also be interested in
The Hydrogen Economy:
author Jeremy Rifkin
Rifkin mentions that the trend is toward lower & lower carbon emissions, and that Hydrogen fuel is Carbon zero.
At the time of publication, Hydrogen was an energy transfer medium, NOT an energy source, unlike petroleum-based fuels.
At the time of publication, only about 70% of the energy used to generate the Hydrogen is recovered when the fuel is consumed.
Increasing that to near 100% efficiency, and Hydrogen is substantially closer to being a widely used fuel for automotive and residential purposes.
But there are still other technological problems, such as how to store and transport Hydrogen.
BUT !!
Those are engineering problems.
And the fabulous thing about engineering problems is, they have engineering solutions.
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