The world is, and has been for while, running on oil. But these days are over. Most of us will witness the end of oil in our lifetime.
In less than 10 years, most vehicles sold will be electric, while renewables share will raise drastically.
In the near future (10-20 years), tomorrow's world will run on nuclear, solar and hydro.
In a more distant future (>25 years), it will probably start to run on nuclear fusion and space-based solar power (SSP).
I don't know. My cristal balls aren't working well those days.
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