Will any of these work in the third world in a way that's geopolitically acceptable? The US frowns at small third world countries having access to nuclear reactors.
Post-industrialization "third world" countries like South Korea and Brazil already have nuclear power. Pre-industrialization third world countries have trivial carbon footprints. By the time they're politically stable enough to build a functioning power grid with enough demand to justify a nuclear plant, it's generally no longer a problem for them to have one.
Also, what does that have anything to do with using them in first world countries?
