One of those signs of wisdom – or perhaps senescence – is when you know you’ve no clue and go ask someone else.
So, extracting carbon from the air. Or, CO2. Hmm, expensive, high energy consumption.
But CO2 dissolves in seawater, we know that. Any CO2 extracted from seawater will soon be replaced with more from the atmosphere.
So, might there be a clever chemistry which makes it cheaper to extract CO2 from seawater?
Or even, what if you were doing something else to seawater – desalination plant, mining for lithium, that sorta stuff – would that get you part of the way there and give you a headstart on that CO2 extraction?