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A comment on Climate Solutions: Is It Feasible to Remove Enough CO2 from the Air?. Parent comment

Re:Climate Solutions: Is It Feasible to Remove Enough CO2 fr... by tzs on Friday November 16, 2018 @09:51PM (#18473635)
> Their photosynthesis processes evolved in and are ideal for an environment with CO2 concentrations at least 5-10x the current levels

Wait a second. For the last few million years CO2 levels have been in the 180-300 ppm range (except for recently where they have gone above that).

What makes you think that plants that initially evolved hundreds of millions of years ago in very high CO2 environments did not continue evolving as CO2 levels changed, so that the plants we now have find 180-300 ppm to be ideal?

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Re:Climate Solutions: Is It Feasible to Remove Enough CO2 fr... by zerealshadowban on Friday November 16, 2018 @09:59PM (#18473663)
The two photosynthesis paths that evolved in land-based plants (C3 and C4) are very specific, not adaptable. There has been no such thing as further "evolution" of these chemical/physical processes in plants.
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