4 ms·

I bet Sahara is pretty constant all the time :) EDIT: Spoke too soon: https://www.mnn.com/earth-matters/climate-weather/videos/snow-covers-sahara-fourth-time-

• user5994461 8y ago
  It's actually really not. A few thousand years ago, it was a tropical forests and it will be again within a few thousand years.
  • mirimir 8y ago
    Yeah, I've read that too. So maybe the US Southwest will go total desert. And maybe even the Amazon. But the Sahara could become tropical forest again. I don't recall mechanistic details. Something about atmospheric standing waves, I think.