is hung or not, but one can only welcome the immense work of Bill Bryson for writing this book. Research and sources are so numerous, that a series of almost 70 pages of notes used in this book !!!! It's a bible of information on us and our surroundings. Science popularized (although sometimes you have to follow), and this little touch of humor in the narration of a truly amazing author. He takes us with him, information discovery, and relevant in a light style. A huge translation work too, and the 5 stars should also salute those who spend hours we make these books accessible .... translators. A real favorite, a bedside book that I recommend to the curious, and in the end, one wonders if the secret of happiness is not hiding behind this .... it is really nothing at all happened on a whim Hopefully, so what's it take the lead?