The Extraordinary Book of Information, from the popular Armchair Digest series, is a treasure trove of stories, interviews, hilarious trivia, quotes, timelines, and astounding facts. The information is culled from thousands of sources and pulled together in one handy volume. Here is a sampling of the fascinating facts in The Extraordinary Book of Information: bull; In some parts of Italy, people savor a worm-filled cheese called casu marzu. bull; Sand tiger shark eggs hatch in one of two chambers in the womb. The shark embryos eat each other until there are only two survivors -- one in each chamber. bull; On the Micronesian island of Yap, people once used 12-foot limestone coins as money. bull; President John Quincy Adams started each summer day with a skinny dip in the Potomac River. bull; Tokyo subways and train stations employee large men called oshiya ("pushers") to cram people into crowded cars. Open to any page of The Extraordinary Book of Information and you'll find something amazing that you didn't know.