Misc: Who invented crop insurance?

Questions

name the group that did the song-turned-pop-culture-icon 'stairway to heaven'?

who was arrested at age 11 for releasing a computer virus that crashed 1507 computer systems in one day, single-handedly causing a 7 point drop in the u.s stock market?

which science fiction author invented such things as the communications satellite?

what film starred bruce willis as a washed up private eye and kenan ivory wayens as a washed up football player?

who played jean-luc picard in star trek the next geeration?