alt Hacker NewsTrees and seagrass can address the sequestration side.
You can find examples here on Frontier's site of companies that are taking biomass (plant stuff like tree waste) and sequestering it in mines or other storage deep underground.
When thinking about sucking carbon from the sky, I find it useful to separate how I think about grabbing on to carbon dioxide from how to store carbon dioxide, rather than thinking of it as one step. I find it's easy to get lost and either over or undervalue things otherwise.
Plants and trees are excellent at grabbing on, for example, and with a good process they can lead to very cheap methods to store/remove carbon dioxide for a thousand years.
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Link to Frontier's biomass storage portfolio: https://frontierclimate.com/portfolio?pathway=biomass_carbon...
I appreciate the response and note that it's precisely because I already separate both the acquisition of CO2 from the sky and direct acquisition from industrial processes well apart from the storage side that I correctly stated trees and seagrass aren't storage methods.
How it's stored (and the energy used to store) matters. As you know - there's not much to argue about here, just a nod that it's best to be careful with words.
As a further question, what's the most effective Direct Air Capture method actually working on your books so far, in terms of greatest tonnages, and where is that captured CO2 being stored.