Well, Ridiculous Historians, as our pal Mark Twain settled into a life of literary fame, he still couldn't help himself from making huge investments in terrible ideas -- sometimes, at an enormous emotional cost to his family. In the second part of this special two-part series, Ben, Noel and Max explore some of Twain's most infamous bad investments, from a bizarre nutritional powder to his own board game, his deep friendship with Nikola Tesla, and more.