We’ve used 700m metric tons thus far. There is a further known deposits of 2.1b metric tons still in the ground. So yes, we do.

The emissions we would create to produce that much aluminum, steel and concrete would almost certainly make things far worse far faster than if we were to gradually adopt more renewables and build nuclear, and skip the global grid altogether.

I recall the register running the numbers on the idea several years back, and it wasn't pretty.

Shifted goalposts again.

What if you produced the aluminium and steel with solar energy? Could an arc furnace get hot enough?

Concrete… I don’t know how much we are talking, you mean for foundations? There isn’t a way to make carbon neutral concrete?