[gorkish]

If efficiency is the metric you're going for, move the people and do nothing. It's probably what will happen eventually anyway.

[chmod775]

I'm going to go out on a limb and claim there's more than enough water for the people - the area is just unsuitable for the economic activity a small fraction of those people engages in. Move that.

[missedthecue]

Moving 50 million people seems to me to incur more effort than building $10b of solar

[konschubert]

Yea but that wouldn’t be disruptive so it’s no fun /s