If there is one environment on the planet not in risk it's the Sahara. A lot of Egypt, Northern Africa, Iraq/Palestine would have looked like the American Midwest back when they were empires.
True its a man-made desert (despite some published nonsense about 'shifts in the earth's axis' causing weather changes). So are most of the ecosystems on the planet, by now. The issue is, changing relatively stable ecosystems is done at our peril. I just want to point out how little we really care about this stuff - to the point we enthusiastically endorse mega projects that amount to terraforming, with so little discussion.
If there is one environment on the planet not in risk it's the Sahara. A lot of Egypt, Northern Africa, Iraq/Palestine would have looked like the American Midwest back when they were empires.