From 1925 to 1945, more than 12 million copies of Adolf Hitler's semi-autobiographical screed "Mein Kampf" (in English, "My Struggle") were sold …
Not everyone believes the story about how the Nazi party leader died. So what really happened? Plus why did Hitler write "Mein Kampf"? Was he building UFOs in Antarctica? And do people really pay big money for his artwork?