OTOH chlorophyll based organisms
> have been regulating CO2 for billions of years and
> they've done it for free. So why not stick with
> the cheapest most effective means of planetary
> control of CO2 ever developed and let the plants
> do it.


During those billions of years, the plants have spread to all the places they can reach where the conditions are suitable.

How do we increase the area/volume in any scale relevant to this issue?



Regards,
Tommi

"In this house, we obey the laws of thermodynamics!"
-Homer J. Simpson