Hi , this is astounding news to me as I have always deep down believed this to be true . Must have been that asteroid strike that shifted the earth axis/poles!!!

Fascinating! Could it also be that our understanding of plate tectonics is flawed, and perhaps Antarctica was located further north 90 millions years ago?

Hi. Or, maybe, it's the result of continental drift

https://youtu.be/uLahVJNnoZ4

Continental drift says the area would have been a similar latitude to the bottom of south america, which is not that warm now. Hope that's not what we're heading for.

Perhaps the Dinosaurs chose to ignore the signs, causing MASSIVE global...oh wait, it's covered in ice now. nvrmnd.

“But in our model-based experiments, it took (CO2) concentration levels of 1,120 to 1,680 ppm to reach the average temperatures back then in the Antarctic.”

And the Antarctic climate will get to those conditions again as CO2 levels continue to increase. Looking forward to a lush green Earth, similar to that present in the Cretaceous era. Just don't buy ocean front property!!

Many scientists have known for years that it was tropical from ice cores taken of tropical trees.
Many also knew that atmosphere pressure and carbon dioxide was greater...
The climate change also was known...
When the earth split open, the weight of the continents sent vast amounts of water into space.
This super cooled ice particles were attracted mostly to the poles.
Oh yeah-- that would give too much credence to world wide flood, explain mixture of fosiles, water sorting by density, and it would not help the theories of evolution. Ok, we will have to ignore these facts.
Well any other theories?

If these newly-discovered facts are true, then it can only be concluded that the Earth's rotation axis was different. The orientation of the sun (and the moon) to our planet enormously affects the terrestrial conditions. As one of the posters said, a huge asteroid may have shifted things over. The one that wiped out the dinosaurs (and lots of other lifeforms) about 60-70 million years ago may have changed the axis to what we have today.

At last! Worth checking out Graham Hancock's 1995 book, Fingerprints of the Gods. Good theory about an outer shell of the earths crust that has moved over time. He connects this to the Noah flood stories that seem to be consistent in a variety of cultures.

That's AMAZING! Imagine, a climate model which was =not= precisely right all the way through! <cue laughtrack> The answer to that last question is Mother Nature's little Ice Ages. (Hint: This will be on the test.)