Alternatives exist but they aren't free...

https://www.aga.org/decarbonizing-through-carbon-capture/

https://www.energyindepth.org/study-finds-carbon-capture-and...

https://www.sciencedirect.com/science/article/pii/S277265682...

TIL mentioning a viable technology that would reduce emissions here but delay a forced transition to renewables is an instant downvote.