Eli5: If we had steam powered trains back in the day, why didn’t steam become a common “clean” energy source? Why did it die out?
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Steam has to be generated by burning something to make heat. Early Steam trains burned wood or coal for that purpose.
Diesel electric trains (that we use today) are by comparison more powerful, pollute less, and have the advantage that you don’t need to stop for water for the boilers.
Some form of electric train, or hydrogen powered trains have the potential of replacing diesel.
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