"The real experiment in terraforming has been our addition of billions of gigatons of CO2 and other green house gases that we do annually"
We release about 35 billion *tonnes* of CO2 per annum.
You are off by a factor of about 100 million. Good work.
People who exaggerate - or lie - about global warming do more damage to the fight against global warming than pricks celebrating their dirty trucks.
Words of wisdom.
Some more words:
AGW is real, unless the laws of physics have been revoked.
Most of these fixed create more problems than they solve.
And the panicked responses of the Greta Thunbergs of the world "HOW DARE YOU?!?! do not help at all. Jeebuz k. Ryste, billions of gigatonnes?
People grasping at straws like aerosol injection which will acidify the land, waterways and oceans, making at least a many extinctions, but likely more than AGW would. And this brain dead solution of salting the earth makes for a real mess as well.
In the ultimate home made experiment, if we decide to both to aerosol injection and salting the earth, we'll have a gigantic vinegar and baking soda reaction (only with sulfuric or hydrochloric acid that will release all the "sequestered" CO2 back into the atmosphere atmosphere.
Back to reality. We do have an issue with rapid increases in energy retention of the atmosphere. These are fueld by de-sequestering CO2 and Methane. In my estimation, we passed the so called "tipping point" in the early 1980's, and have only accelerated the desequestering of CO2 and methane release since then.
And that ain't good. This is creating weather instability. It is shifting ecological zones. Some life forms will become extinct.
But at this point, the roller coaster ride has started the first downhill stretch, and we seem to want to remove the tracks halfway down with stupid "experiments".
We need to stop de-sequestering Carbon as quickly as possible. Without tossing the world into chaos, which will as likely as not lead to open warfare between nations. Will we do it? probably not. The pragmatist in me tells me that between developing countries who want to develop without restraint, and developed countries who wish to preserve the status quo, we are going to be like the plane that's almost out of fuel, and a passenger asks "How much fuel do we have?"
The pilot answers, "We have just enough to take us to the crash site."
I guess whatever good news there is, is that CO2 levels have been rather higher in the past.