3 ms·Ah, back in 1953, when they were only 20 years away from practical nuclear fusion.by taneq 6y agoAh, back in 1953, when they were only 20 years away from practical nuclear fusion.el_oni 6y agoAs opposed to 2020 where we're now only about 20 years away from practical nuclear fusiontaneq 6y agoOr 2050 when we will hopefully only be about 20 years away from practical nuclear fusion... ;)