science and nature: what the heck is inside corn that makes it pop?

Questions

NASA civilian pilot Neil A Armstrong takes X-15 to 63,250 m?

Agnes Moorehead actress (Endora-Bewitched), dies at 67?

Paul McCartney releases "Band on the Run"?

George Harrison sings the lumberjack song with Monty Python?

-BC- Traditional date of the foundation of Rome.?