Interesting – via Hot Air:
A few thousand years ago, a mighty river flowed through the Sahara across what is today Sudan. The Wadi Howar—now just a dried-out riverbed for most of the year—sustained not just fish, crocodiles, and hippopotamuses, but also agriculture and human settlement. As late as 1,000 B.C., a powerful fortress stood on its shores. But then the Sahara dried out, turning from a green savannah into an inhospitable desert. The culprit: climate change. According to desert geologist Stefan Kröpelin, who has studied geological data for the eastern Sahara going back 6,000 years, the desert spread as temperatures dropped. Global cooling meant that the air had less capacity to hold moisture from the oceans, leading to fewer rains and more arid climes.
Now, that same process is happening in reverse. As temperatures rise, the Sahara and other dry areas are greening on the edges. “I’ve been studying the Sahara for 30 years and can definitely say that it’s getting greener,” says Kröpelin, who specializes in desert archaeology and climate history at the University of Cologne. Where there used to be nothing but desert, he says, there is now not just grass but shrubs and acacia trees–and he has the photos from 30 years of extensive field study to prove it.
Grasp what is happening here, Warmists – 3,000 years ago the world was so warm, much warmer than it is now, that parts of the Sahara we know as burnt-over desert were lush savannah. How can that be? Could it be – is it possible? – that perhaps the climate has changed a lot over the ages? That we go up and down and up and down in global mean temperature for so many variable reasons that no one can really figure out why one age is relatively warm and another relatively cool? Could it be, also, that plant and animal species adapt to these changing conditions?
I know: bizarre and freakish theory. Just can’t be true, though – because if it is true, then there’s really no way to blame it on straight, white, Christian males…