Supposedly carbon emissions is a top issue. One issue with carbon capture in the wild is that carbon is actually a not a major portion of the atmosphere (ie, t

Supposedly carbon emissions is a top issue. One issue with carbon capture in the wild is that carbon is actually a not a major portion of the atmosphere (ie, think 0.0004) So doing capture near CO2 sources makes some sense. Secondarily, the private market is throwing money at this as well, current costs per ton captured are on the range of $1,000! That is mind boggling pricy, we don't know if these demos were this bad - they might even have been better. So, if you have a potential society ending issue, spending $1B to try out some things might not be terrible. That said, if you look at things like SLS, you can understand how these things are prone to being total boondoggles as well.