Ten years ago I was in a set of lectures by one of the ITER consultants. There were a handful of challenges left (e.g. material degradation after long-term neu

Ten years ago I was in a set of lectures by one of the ITER consultants. There were a handful of challenges left (e.g. material degradation after long-term neutron bombardment) but it wasn't science fiction then. The only question was if they could get the funding to finish the last research hurdles.