even if global warming was real, he didn’t come up with any idea that would actually solve the problem
Oops, we must be fair to the Gore.
He certainly has a vision of carbon offsets by which more productive nations (read United States) transfer a portion of their wealth to less productive nations.
How about a Central Carbon Commissariat (headed by the Gore, of course) which doles out carboniferous fuel allocations to the several nations, thereby making all equal. From each according to its ability, to each according to its needs.
In addition, how about a "Carbon Tax" (alternatively, "BTU Tax") whereby it will cost so much to use petroleum, natural gas or coal as a fuel that we will all be reduced to riding bicycles.
OK, come to think of it, all these things are likely to put a major strain on relations between nations.
So, Nobel Peace Prize? It is to laugh.