Harry Potter and the Balance of Earth

Harry Potter and the Balance of Earth  is a book written by Al Gore, and which is a sequel to. According to Gore, the Harry Potter-themed sequel was much more popular than the original. Its plot focuses on defending Earth against pollution and dark wizards.

Trivia

 * The mention of dark wizards is a reference to the controversy about Harry Potter, and the opponents of the franchise who claim it promotes witchcraft.