Is there an alternate fuel that de-emphasizes carbon?

[anorlunda]

If climate change is the goal, then the energy/pollution caused by production of the fuel is just as important than the burning of the fuel.

 

[Vanadium 50]

Two quick comments:

Hydrogen is commercially produced from methane, with CO2 as a byproduct. It would be better to use the methane directly: less energy loss for the same emission. Only a small amount is produced through water electrolysis.

Ammonia is nasty stuff. It's one of the most dangerous chemicals today - probably just under carbon monoxide. The reasons CFCs were introduced as refrigerants in around the 1920's is because people were dropping like flies from ammonia accidents.

 

[Vanadium 50]

I was going to go on a long screed about ammonia releases, but then I realized I would just be...venting.