Misc: In 1958 ---------- Castro makes a speech on Cuban pirate radio Rebelde. ?

Questions

what is another more commonly used name for the p.e.t machine?

first japanese winner of the nobel prize for literature?

which nobel laureate renounced his knighthood in 1919 following the amritsar massacre of 400 indian demonstrators by british troops?

who discovered radioactivity in uranium?

what was the old term for hydrogen?