Setting foot on the moon, splitting the atom and transmuting elements, curing incurable diseases like genetic blindness and spinal atrophy... > doubling human

Setting foot on the moon, splitting the atom and transmuting elements, curing incurable diseases like genetic blindness and spinal atrophy... > doubling human lifespans This is partly a statistical effect of greatly reducing infant mortality (which used to be as bad as 50%) but even that is mind-blowing.