She loved solving problems. And she loved pushing the limits of what girls and women were expected to do and be. In the mid-twentieth century, women were not welcome in the sciences, but Marie was tenacious. She got a job in a laboratory at Cambridge University, New York. But then she faced another barrior: women were not allowed on the research ships (they were considered bad luck on boats). So instead, Marie stayed back and dove deep into the data her colleagues recorded. She mapped point after point and slowly revealed a deep rift valley in the ocean floor. At first the scientific community refused to believe her, but her evidence was irrefutable. She proved to the world that her research was correct. The mid-ocean ridge that Marie discovered is the single largest geographic feature on the planet, and she mapped it all from her small, cramped office.

    SEE INSIDE AN AMAZING 14TH-CENTURY CASTLEFrom the creators of INCREDIBLE CROSS-SECTIONSWHY...did castles have wooden walkways around the top of their walls?...did one castle attacker set fire to 40 dead pigs?...was the longbow such a fearsome weapon?WHO...was a "gong farmer"?...catapulted animals over the castle walls?...ate elaborate dishes of porpoise and peacock?WHAT...was strewn on castle floors?...was a quantain?...was a squire's job?Follow the story of life in the castle in both peace and war - and find the enemy spy!

    His friend the brave Sieur DeNarsac, captain of the count's men-at-arms, and Thierry, a young page, must now solve the tragic mystery. Yet it is a magnificent white wolfhound by the name of Dragon -- Montdidier's faithful companion -- who brings an unexpected, shocking conclusion to the puzzle of his master's untimely death.New York Times best-selling authors Julie Andrews Edwards and Emma Walton Hamilton weave a tapestry of intrigue, power, loyalty, and friendship in this novel based on the captivating French legend of Montargis.

    Hendrik Willem van Loon's ability to convey history as a fascinating tale of adventure has endeared this book to countless readers. 280 drawings.

    It's a beautiful and comprehensive reference tool for beginners and more experienced players alike. Written by Alex Wiltshire, former editor of Edge Magazine and expert gamer, Blockopedia is fully illustrated and packed with essential information about each Minecraft block.  Encyclopedic in its approach, each block is featured with a general overview of its properties, as well as little-known trivia and expert advice on what to do with it.  From basic plants and ores to enchantment tables and End stone, you'll find every single block in here, including information on the new blocks released in the eagerly anticipated 1.8 game update.

    Full-color illustrations.

    A publishing event!"If you decide to go to the moon," writes Faith McNulty, "read this book first. It will tell you how to get there and what to do after you land. The most important part tells you how to get home.Written in the second person, the text allows the reader to participate in every aspect of the journey, from packing ("don't forget your diary and plenty of food") to liftoff (at first you'll feel heavy; don't worry") to traveling through space (where "the moon glows like a pearl in the black, black sky"). The reader lands at the Sea of Tranquility, the site of the first lunar landing.

    At 102 stories, the structure was no small feat. In fact, its construction coincided with the onset of the Great Depression, and so progress was met with numerous setbacks. Still, because of the efficiency that went into the building's development, it only took a year and forty-five days to complete! In this informative, easy-to-read account, Janet B. Pascal describes the rise of skyscrapers in the United States, the intricacies of the groundbreaking construction process, and the effect the iconic Empire State Building continues to have today.

    Illustrates the concept of big, bigger, and biggest by comparing the physical measurements of such large things as a blue whale, a mountain, a star, and the universe.

    During the course of each day, something sparks a thought or memory, and a loved one comes to mind. Perhaps it's a sound, a fragrance, or something that catches our eye; when this happens we can't help but pause for a moment and smile. So give this book to the special loved ones in your life, and they will share with you all the times they think to themselves how much they love you, when . . .

    Browne and his love of precepts. Simply put, precepts are principles to live by, and Mr. Browne has compiled 365 of them—one for each day of the year—drawn from popular songs to children’s books to inscriptions on Egyptian tombstones to fortune cookies. His selections celebrate kindness, hopefulness, the goodness of human beings, the strength of people’s hearts, and the power of people’s wills. Interspersed with the precepts are letters and emails from characters who appeared in Wonder. Readers hear from Summer, Jack, Charlotte, Julian, and Amos.   There’s something for everyone here, with words of wisdom from such noteworthy people as Anne Frank, Martin Luther King Jr., Confucius, Goethe, Sappho—and over 100 readers of Wonder who sent R. J. Palacio their own precepts.

    As we dream with him, we are taken further and further into mathematical theory, where ideas eventually take flight, until everyone--from those who fumble over fractions to those who solve complex equations in their heads--winds up marveling at what numbers can do.Hans Magnus Enzensberger is a true polymath, the kind of superb intellectual who loves thinking and marshals all of his charm and wit to share his passions with the world. In The Number Devil, he brings together the surreal logic of Alice in Wonderland and the existential geometry of Flatland with the kind of math everyone would love, if only they had a number devil to teach them.

    Cyr slide from a Cardano grille? Did you know that the discovery of a substitution cipher caused Mary Queen of Scots to lose her head? Don't look now, but packed into this practical field guide is everything a young person needs to know about the art of concealment - making and breaking codes, mastering cipher systems, and experimenting with secret writing. Offering plenty of hands-on practice sessions, tips for creating a code-making kit, sidebars on secret codes in history, and an amusing pair of spies to illustrate techniques, Paul B. Janeczko's tantalizing TOP SECRET won't stay a secret for long.

    It had to be found. But projects as big as CERN’s Large Hadron Collider don’t happen without incredible risks – and occasional skullduggery. In the definitive account of this landmark event, Caltech physicist and acclaimed science writer Sean Carroll reveals the insights, rivalry, and wonder that fuelled the Higgs discovery, and takes us on a riveting and irresistible ride to the very edge of physics today.

    Laura Purdie Salas's lyrical rhyming text and Violeta Dabija's glowing illustrations show how rocks decorate and strengthen the world around them.