 The cartoon clip that Al Gore (I) (qv) shows to help explain  global warming is from the _"Futurama" (1999)_ (qv) episode "Crimes  of the Hot." Al Gore (I) (qv) (whose daughter Kristin was a writer  for the series) guest starred as himself in the episode, claiming to  be the inventor of the environment and the author of Balance of the  Earth, and the more popular Harry Potter and the Balance of the  Earth.