Superman, Vol. 1

Planet of Angels - Superman doesn't need to sleep, but he has nothing better to do tonight, so he analyses his brainwaves. While in the equipment, he sees visions of angels and demons which cannot possibly be real.

The Fabulous World of Krypton: The Doomsayer - Superman, Green Arrow, and Black Canary notice a major source of pollution. After telling a story of a Kryptonian scientist, Superman sees the Black Canary stirred into action.