I've been thinking a lot about climate change recently. It's been a few years and chemistry was never my strong class in school, but there's nothing fundamentally wrong with the attached, right?
I think we should be able to take combustion products and turn it into fuels. However, while there will be a net energy loss because 2nd Law but as long as it is from a renewable source (i.e. solar/nuclear), I'm not sure how much. 20%?
Additionally, if we can synthesize hydrocarbons, is there a reason we can't make plastics? Plastics are infamously resistant to decomposition and quite a few are are primarily carbon by mass. Is there a reason we couldn't take H2O/CO2 from the atmosphere and convert it to plastics and store it in Yucca?