There are theree. The Mohave, the Sonaran and the Chijijuan.
The real problem is not climate change but rather climate normalizing.
Another problem is fooolish people believing realestate sales man.
An eon is half a billion years or so.
Only 10,000 years ago, the Sonoran Desert in Arizona did not exist. Mammoth bones from the period were discovered only 50 miles from Yuma.
Your sentiment is correct, but your timing is off.
Huge changes in climate with each glacial period.