Surprisingly not much (if you mean the knowledge discovered after WW2). Scientific endeavors were financed differently during the Cold War, and the academia peo

Surprisingly not much (if you mean the knowledge discovered after WW2). Scientific endeavors were financed differently during the Cold War, and the academia people were quite anti-militaristic usually, so they didn't get money to work on these sort of problems. It is only after 1990 the funding started to shift to the universities back again, somewhat.