Fuck the naysayers: Any realistic long-term solution to this needs to include removing CO₂ that’s already in the atmosphere. The best time to start developing this tech would have been 50 years ago. If we don’t do this now, someone else will be saying the same thing 50 years from now.
Climate change doesn’t have a single-target solution. This tech may not be very impressive yet but it’s important we figure it out eventually.