Proposal: Take sunlight, ocean water and atmospheric nitrogen and make ammonia. Ship ammonia to where it's needed as fertilizer or fuel. Extract hydrogen from the ammonia to power aircraft.
All I'm claiming is this proposal deserves study as one possibility for how a capitalistic economy can turn challenge into opportunity. Is there a role for public policy in facilitating capital to flow to where it is urgently needed to meet a big challenge we face?
Proposal: Not to destroy capitalism but to preserve it, we need mechanisms to price fossil carbon emissions at their true costs. A carbon tax is one way to price carbon emissions.