{"schema_version":"bf_book_companion_v1","release_id":"20261010T034321Z-reviewed-full-unique-works","book":{"amazon_purchase_url":"https://www.amazon.com/dp/0375846646?tag=bookfrontie00-20","asin":"0375846646","authors":["Mary Pope Osborne","Natalie Pope Boyce"],"book_id":"9780375846649","canonical_url":"https://bookfrontier.com/books/penguins-and-antarctica-9780375846649","cover_image_url":"https://img.bookfrontier.com/9780375846649.jpg?v=05dbac83bf81b2ff","description":"The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Getting the facts behind the fiction has never looked better. Track the facts with Jack and Annie!! When Jack and Annie got back from their adventure in Magic Tree House Merlin Mission #12: Eve of the Emperor Penguin, they had lots of questions. What do penguins eat? Why do they huddle together in groups? Who won the race to the South Pole? What happens at a research station in Antarctica? 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Magic Tree House: Adventures with Jack and Annie, perfect for readers who are just beginning chapter books Merlin Missions: More challenging adventures for the experienced reader Super Edition: A longer and more dangerous adventure Fact Trackers: Nonfiction companions to your favorite Magic Tree House adventures Have more fun with Jack and Annie at MagicTreeHouse.com!","forthcoming":false,"isbn13":"9780375846649","publication_date":"20080923","publisher":"Random House Children's Books","slug":"penguins-and-antarctica","subtitle":"A Nonfiction Companion to Magic Tree House Merlin Mission #12: Eve of the Emperor Penguin","title":"Penguins and Antarctica"},"discovery":{"categories":{"all":[{"bisac_code":"JNF003350","confidence_band":"medium","label":"Penguins","score":0.839,"source":"bisac_hint_model"},{"bisac_code":"JNF038090","confidence_band":"high","label":"Polar Regions","score":0.8356,"source":"bisac_hint_model"},{"bisac_code":"JUV002380","confidence_band":"medium","label":"Penguin Stories","score":0.7963,"source":"bisac_hint_model"}],"hint":[{"bisac_code":"JNF003350","confidence_band":"medium","label":"Penguins","score":0.839,"source":"bisac_hint_model"},{"bisac_code":"JNF038090","confidence_band":"high","label":"Polar Regions","score":0.8356,"source":"bisac_hint_model"},{"bisac_code":"JUV002380","confidence_band":"medium","label":"Penguin Stories","score":0.7963,"source":"bisac_hint_model"}],"publisher":[{"bisac_code":"JNF003000","confidence_band":"high","label":"Animal Facts","score":1,"source":"onix_publisher_code"},{"bisac_code":"JNF047000","confidence_band":"high","label":"Chapter Books","score":1,"source":"onix_publisher_code"},{"bisac_code":"JNF051050","confidence_band":"high","label":"Biology & Life Science","score":1,"source":"onix_publisher_code"}]},"genres":[{"label":"Penguins","score":0.839,"slug":"penguins"},{"label":"Polar Regions","score":0.8356,"slug":"polar-regions"},{"label":"Penguin Stories","score":0.7963,"slug":"penguin-stories"}],"reader_fit":["Kids curious about penguins and Antarctica","Kids who want nonfiction companions to Magic Tree House adventures"],"related_lists":[],"series":null,"similar_books":[{"authors":["Mary Pope Osborne"],"book_id":"9780375837340","cover_image_url":"https://img.bookfrontier.com/9780375837340.jpg?v=8aa600c4477b5efa","score":0.9207,"title":"Eve of the Emperor Penguin","url":"https://bookfrontier.com/books/9780375837340"},{"authors":["Mary Pope Osborne","Natalie Pope Boyce"],"book_id":"9780375832222","cover_image_url":"https://img.bookfrontier.com/9780375832222.jpg?v=debd54569bf5c8e8","score":0.8858,"title":"Polar Bears and the Arctic","url":"https://bookfrontier.com/books/9780375832222"},{"authors":["Mary Pope Osborne"],"book_id":"9780679883418","cover_image_url":"https://img.bookfrontier.com/9780679883418.jpg?v=ec296d3bc51b6b3e","score":0.8221,"title":"Polar Bears Past Bedtime","url":"https://bookfrontier.com/books/9780679883418"},{"authors":["David Salomon"],"book_id":"9781524715601","cover_image_url":"https://img.bookfrontier.com/9781524715601.jpg?v=97be7898b19e8e72","score":0.8063,"title":"Penguins!","url":"https://bookfrontier.com/books/9781524715601"},{"authors":["Gail Gibbons"],"book_id":"9780823415168","cover_image_url":"https://img.bookfrontier.com/9780823415168.jpg?v=688c80a8c3133565","score":0.8019,"title":"Penguins!","url":"https://bookfrontier.com/books/9780823415168"},{"authors":["Mary Pope Osborne"],"book_id":"9780375802997","cover_image_url":"https://img.bookfrontier.com/9780375802997.jpg?v=a1a3d122ba76c28a","score":0.7975,"title":"Pirates","url":"https://bookfrontier.com/books/9780375802997"}],"topics":[{"evidence_refs":["keyword:non fiction books for kids age 9 12"],"label":"Kids","score":1,"slug":"kids"},{"evidence_refs":["keyword:kids books ages 9-12"],"label":"Ages","score":0.2642,"slug":"ages"},{"evidence_refs":["keyword:stem gifts"],"label":"Stem","score":0.0255,"slug":"stem"}],"what_you_get":["Themes: Penguins, Antarctica and the South Pole, Antarctic research stations.","Themes: Kids, Ages, Stem.","Reading lane: Penguins and Polar Regions."]},"llm_signals":{"confidence":0.94,"pacing":"unknown","reader_fit":["Kids curious about penguins and Antarctica","Kids who want nonfiction companions to Magic Tree House adventures"],"themes":["Penguins","Antarctica and the South Pole","Antarctic research stations"],"tropes":[]},"source_presence":{"amazon":true,"book_detail":true,"goodreads":true,"llm_signals":true,"similarity_seed":true},"stats":{"amazon_ratings_count":161,"goodreads_ratings_count":524,"goodreads_reviews_count":34,"quality_score":0.9048}}