The What Do We Know About? series explores the mysterious, the unknown, and the unexplained. Does the underwater kingdom of Atlantis really exist, or is it just a centuries-old myth? Find out all there is to know about Atlantis in this compelling and up-to-date addition to an exciting new series! From the #1 New York Times Best-Selling Who Was? series comes What Do We Know About?, a series that tells the stories of world-famous crytpids, mysteries, and more. What Do We Know About Atlantis? lets curious young readers dive into what we really know about the sunken city. First described by Plato, the idea of Atlantis has existed since 360 B.C.! Learn about the history of the Greek god Poseidon's relationship with the kingdom and the real research that's been done by historians and scientists who are trying to locate Atlantis. Featured in plenty of movies, books, and comics, Atlantis is still relevant in popular culture today...but does it really exist? Find out all the facts we do know about it in this exciting book.

The What Do We Know About? series explores the mysterious, the unknown, and the unexplained. Is the Loch Ness Monster really lurking beneath Scottish waters, or is it just a myth? Find out all that there is to know about the most famous aquatic cryptid! From the #1 New York Times Best-Selling Who Was? series comes What Do We Know About?, a series that tells the stories of world-famous crytpids, mysteries, and more. Also known as Nessie, this creature of the lake's history dates all the way back to the year 565. Since then, there have been photographs and films that allegedly show proof of the monster's existence. But are they fact or fiction? Learn all about the research, expeditions, and tests that provide clues about the Loch Ness Monster and whether or not it is real in this captivating book for young readers!

The What Do We Know About? series explores the mysterious, the unknown, and the unexplained. Are there really aliens visiting Earth to observe and interact with humans? In 1961, Betty and Barney Hill claimed to have experienced a bizarre night that included extraterrestrials, flying saucers, and a few lost hours during which they could recall very little until they underwent hypnosis. Their mysterious story was just the first of many that have been told by people who have since come forward with their own similar experiences. Although there are thousands of people who claim to have experienced alien abduction, much of the world remains skeptical. Is alien abduction a real phenomenon that has affected people worldwide or just an imagined shared experience? Could the US government be working to cover up these stories? Here are the the facts about what we really know about Alien Abduction.

The What Do We Know About? series explores the mysterious, the unknown, and the unexplained. Why was Sarah Winchester's puzzling mansion built with so many mysterious features? And is it truly haunted? In 1884, Sarah Winchester began building a large mansion in Santa Clara County, California. Under Sarah's direction, the house rose to be seven stories high and filled with mysterious features, including stairs that lead to nowhere and windows that look into other interior rooms. The house is more than just oddly designed, Many people believe that it is haunted. What made the heiress to the Winchester rifle fortune, an independent woman in many ways ahead of her time, create such an unusual house? Is it really filled with ghosts and spirit energy? Find out more in this nonfiction title about one of America's most famously unexplainable and possibly haunted houses.

The What Do We Know About? series explores the mysterious, the unknown, and the unexplained. Is there really a mysterious, blood-sucking creature called the Chupcabra? Early one morning in 1995, a rancher in Humacao, Puerto Rico, found three of his goats dead. The blood seemed to have been drained from their bodies. As dozens more farm animals were found dead across the island, the fear of the so-called Chupacabra—the "goat sucker" — grew. But was a mysterious cryptid really responsible for all of these deaths? And if so, where would it go next? Follow the trail of the Chupacabra in this exciting new title.

The What Do We Know About? series explores the mysterious, the unknown, and the unexplained. Is this celebrated sea creature fact, myth, or legend? Find out all we know about the Kraken and its history in this exciting book! Presenting What Do We Know About?, an exciting new extension the #1 New York Times Best-Selling Who Was? series! Sea monsters have a long history in lore and literature. Homer first wrote of them in 700 BCE. What Do We Know About the Kraken? lets curious young readers explore what we actually know about this mysterious sea monster's long history. Dive into the facts behind this massive squid-like creature that was first described using the word "Kraken" in the beginning of the eighteenth century. For centuries, sailors have feared the Kraken, which they believe lurks in the ocean, waiting to pull ships beneath the surface with its powerful tentacles. Several famous writers such as Alfred, Lord Tennyson and Jules Verne have described monsters inspired by the Kraken. In this book, readers will also learn about the real creature that might have inspired the Kraken—the giant squid.

Find out what really happened when an entire colony disappeared in 1590, just five years after it was founded. What is the truth about the missing members of the lost colony of Roanoke? In 1585, Sir Walter Raleigh attempted to found the very first permanent English settlement in the Americas. The initial settlement—called the Lane colony—failed due to extremely low supplies and a hostile relationship with the Native American people who were already living on the land. Despite this miserable first attempt, Raleigh decided to establish another settlement. Over one hundred people agreed to join this new colony on Roanoke Island, just off the coast of what is now North Carolina. The colony's governor, John White, chose to return to England to get more supplies but found himself stuck there for three years due to an unexpected war. When he arrived back at Roanoke, the entire colony had vanished. Over one hundred people, including his wife and daughter, had seemingly disappeared. They were never heard from again. The only clue left was the word "Croatoan" carved into a post. What really happened to the missing English settlers? Find out what we do know about this historic unsolved mystery in this nonfiction book for young readers.

Find out what really happened when a strange man hijacked an airplane in 1971 and then parachuted out of it, never to be seen again. What is the truth behind the mystery of the man who came to be known as D. B. Cooper? On November 24, 1971, an unidentified man hijacked an airplane that was flying from Portland, Oregon, to Seattle, Washington. He demanded $200,000 and told a flight attendant that he had weapons. After stopping in Seattle, the hijacker was given the money and he released the attendants. But he demanded that the pilots stay on-board, refuel, and fly him to Mexico City. Just thirty minutes after the plane took off, the man jumped out of the aircraft and parachuted away...never to be seen or heard from again. Did he escape with the money? Did he even survive the jump? Over fifty years later, the FBI still does not know what happened to the man they call "D. B. Cooper." Find out what we do know about one of America's most famous, unsolved mysteries in this book for young readers.

The What Do We Know About? series explores the mysterious, the unknown, and the unexplained. Does the ape-like Yeti really roam the Himalayan mountain range?Not quite human and not quite an animal, the Yeti has been the subject of speculation for centuries. In modern times, the Yeti has become a popular cryptid, appearing in movies, books, and TV shows. Although there are many claimed sightings of the Yeti, there is no real evidence that it exists. This elusive cryptid, also known as the Abominable Snowman, remains a mystery. Does the Yeti truly live in the snowy Himalayas? Have the Sherpa who live there spotted him at the highest altitudes? Here are the facts about what we really know about Yeti sightings, research, and lore.