The greens are the least of the worry. The level of international cooperation needed for a project of this scale dooms it because of the political infighting between the various special interest groups of which the greens are but one. Only a top down leader such as Das Führer who could silence the loud mouth groups and just put resources over a continental scale to work on a single front would be able to accomplish something like this. Look at China they can do Great Wall , Three gorges sized projects due to one party rule. Hell ask the Chinese to do the labor and raw materials with Dutch engineering thats the way to get something like this done while ignoring little counties like Gibraltar and Egypt use mass military might to just do it. But that’s the pure blood Italian fascist in me.
a lil atomic teraforming?