Simply a lie. We do not know how either Venus or Mars started. Just another GW pantload.
Just more hyping of the BIG SCAM...create the chaos then the Dems are here to fix it...of course at taxpayer expense....(do we know these clown carpetbaggers, or what?)
Note the weasel word “possible”.
You are right that it isn’t directly testable and we don’t know for sure how they started out. All information we have is based on inferences. I think the best thing to come out of this is how complex the climate and how little we really understand the full dynamics of it.
The point though of the article is that we need to look at Venus and Mars and get hysterical and even if the models aren’t good “if they are right” the climate is going to be shot in 50 years. Just long enough so we can waste billions of dollars trying to fix it. And anyway who wants beaches in Greenland? Such a horrible thing to have longer growing seasons and bigger crop yields and how messed up the dessert ecosystem of the Sahara if it reverted back to the lush climate it had several thousand years ago. I think real global warming would be a very good thing politically. It would totally dilute the large coastal liberal city populations much like New Orleans. (Just wait till the left starts talking about that one)