Hello Internet by CGP Grey Tracks Are My Teeth Real? H.I. #18: Monkey Copyright H.I. #19: Pit of Doom H.I. #30: Fibonacci Dog Years H.I. #35: Are My Teeth Real? H.I. #36: Bear O'Clock H.I. #37: Penguins and Politics H.I. #38: The F-Word Penguins and Politics The F-Word