The US government will spend about 4 billion dollars to build 4 million tons/year of direct CO2 removal capacity.

That's about 1000 dollars per ton/year.

For method this to save civilization, it would need to remove a large fraction of the 60 gigatons of CO2 emitted per year. Capacity to remove 30 gigatons/year would cost 30 trillion dollars. Aren't other solutions cheaper?

I have a feeling it will be difficult to scale up that far. Especially difficult will be sequestering all the extracted CO2 underground. The first plants will be built in places that are especially propitious, Will enough propitious places be found for so much capacity?

Having this approach available will not directly do any harm. What worries me most is that the oil companies will cite this as "the solution" and use it as an excuse to refuse to cut emissions. They will do anything to avoid actual reductions in their oil sales.

(satire) *NYPD Arrests Colombian Turnstile Lord Behind Massive Turnstile-Jumping Ring.*

(satire) *Fetus Steps Outside Womb For Quick Cigarette Break.*

(satire) *Knife-Wielding Tesla Kills Pedestrian.*

The Drug Policy Alliance's strategic plan for ending the "war on drugs".

When a war is on drugs, it is dangerous to everyone.