Emily Raij has been a book editor for more than 10 years. She specializes in editing professional resources for K-12 educators. She has also written for various publications focusing on parenting topics and children with special needs. Emily is a native of Chicago, where she earned her bachelor's degree in journalism from Northwestern University. She currently lives in Tampa, Florida, with her husband, daughter, and son. Steven Otfinoski has written more than 150 books for young readers. Three of his nonfiction books have been chosen Books for the Teen Age by the New York Public Library. Steve is also a playwright and has his own theater company that brings one-person plays about American history to schools. Steve lives in Connecticut with his wife, who is a teacher. They have two children, two dogs, and a cat. When he's not writing he enjoys swimming, tennis, reading, and singing in his church choir. Louise Spilsbury is an experienced author of nonfiction books for young people. Her writing covers a wide range of topics from animals and science to history and social studies. Richard Spilsbury is an experienced author of nonfiction books for young people. He has written about a wide range of topics including science, nature, and history. Nadia Higgins is the published author of more than 70 books for kids and young adults. In addition to weird inventions, she has written about explorers, national parks, outer space, pop stars, and zombies. Higgins lives in Minneapolis, Minnesota with her husband and two daughters. Charlotte Guillain worked as a bookseller, an English teacher and an editor before becoming an author. She has written more than 100 books, both fiction and non-fiction. She always wanted to be a writer and her top tip is to read as much as you can. Michael Capek is a former teacher who lives with his family in Covington, Kentucky. He first saw a terracotta warrior face to face in a museum and has been fascinated by them ever since. Michael is the author of award-winning books for young readers, many of them about history.