Simplify the following text for a Grade 6 native English-speaking person.
Original: Following the rebirth of Superman and the destruction of Green Lantern 's hometown of Coast City in the early 1990s , Hal Jordan seemingly went insane and destroyed the Green Lantern Corps and the Central Power Battery .
Simplified: Hal Jordan 's hometown Coast City was destroyed in the early 1990s and he went insane . Jordan destroyed the Green Lantern Corps and renamed himself Parallax .