The little mouse works as hard as the bigger mice to show readiness for the mission . . . and is chosen for the flight! While in space, the astronauts are busy with their mission when disaster strikes—and only the smallest member of the crew can save the day.

    What animal would you be if a few of your teeth grew so long that they stuck out of your mouth even when it was closed? What would you be if your top canine teeth grew almost all the way down to your feet? This picture book will keep you guessing as you read about how human teeth are like—and unlike—those of other animals.

    It’s time. Today is the day he will once again cast himself into the air, spiral upward into the clouds, and bank into the wind.He wears a black band on his lower right leg and an orange flag on his upper left, bearing the laser inscription B95. Scientists call him the Moonbird because, in the course of his astoundingly long lifetime, this gritty, four-ounce marathoner has flown the distance to the moon—and halfway back! B95 is a robin-sized shorebird, a red knot of the subspecies rufa. Each February he joins a flock that lifts off from Tierra del Fuego, headed for breeding grounds in the Canadian Arctic, nine thousand miles away.  Late in the summer, he begins the return journey. B95 can fly for days without eating or sleeping, but eventually he must descend to refuel and rest. However, recent changes at ancient refueling stations along his migratory circuit—changes caused mostly by human activity—have reduced the food available and made it harder for the birds to reach. And so, since 1995, when B95 was first captured and banded, the worldwide rufa population has collapsed by nearly 80 percent. Most perish somewhere along the great hemispheric circuit, but the Moonbird wings on. He has been seen as recently as November 2011, which makes him nearly twenty years old. Shaking their heads, scientists ask themselves: How can this one bird make it year after year when so many others fall?  National Book Award–winning author Phillip Hoose takes us around the hemisphere with the world’s most celebrated shorebird, showing the obstacles rufa red knots face, introducing a worldwide team of scientists and conservationists trying to save them, and offering insights about what we can do to help shorebirds before it’s too late. Through prose, research, and images, Hoose explores the tragedy of extinction through the triumph of a single bird.

    Orange you sweet? Orange you plump and juicy? Orange you my favorite fruit?Hey - you’re a tangerine!B-lime-y.With information about the science of sight and perception, pigment origins in art and textiles, colloquial expressions and word associations.

    Born the youngest daughter of a poor family in Hanover, Germany, she was scarred from smallpox, stunted from typhus and used by her parents as a scullery maid. But when her favorite brother, William, left for England, he took her with him. The siblings shared a passion for stars, and together they built the greatest telescope of their age, working tirelessly on star charts. Using their telescope, Caroline discovered fourteen nebulae and two galaxies, was the first woman to discover a comet, and became the first woman officially employed as a scientist by no less than the King of England! The information from the Herschels star catalogs is still used by space agencies today.

    By using the Framework you will learn architectural best practices for designing and operating reliable, secure, efficient, and cost-effective systems in the cloud.

    But as she grows, the world grows too. It expands outward—from her family, to her friends, to the city, to the countryside. And as it expands, so does Nanda’s wonder in the underlying shapes and structures patterning it: cogs and wheels, fractals in snowflakes. Eventually, Nanda’s studies lead her to become an astronaut and see the small, round shape of Earth far away. A geometric meditation on wonder, Small World is a modern classic that expresses our big and small place in the vast universe.

    A classic text by the author who developed ELIZA, a natural-language processing system.

    In this fun and fascinating nonfiction picture book, join world-renowned photographers and biologists on their close encounters with the curious creatures that make their own light. Author’s note and bibliography included.

    Readers will marvel at Jimmy's new life at Koala Hospital, being raised by loving human caregivers and interacting with other koalas healing from injury. The book also introduces young readers to the need for conservational awareness: Through Jimmy's life story readers will come to understand the many obstacles koalas and other species face today.

    In 1968, the biggest passenger jet the world had ever seen premiered in Everett, Washington. The giant plane was called the Boeing 747, but reporters named it “the Jumbo jet.” There was only one problem. It couldn’t fly. Yet.Jumbo details the story of the world’s first wide body passenger jet, which could hold more people than any other plane at the time and played a pivotal role in allowing middle class families to afford overseas travel. Author and illustrator Chris Gall, himself a licensed pilot, shows how an innovative design, hard work by countless people, and ground-breaking engineering put the Jumbo jet in the air. On January 22, 1970, the Boeing 747 made it's first transatlantic flight, taking passengers from New York to Paris in seven hours.

    Did you know that North America is where the first T. rex was found? Or that it’s where you can visit the world’s biggest geode as well as its oldest, tallest, and largest trees—not to mention the world’s tallest and steepest roller coasters?! Brimming with fascinating insight (Who is the highest-paid public employee in each state?) and whimsical discovery (Where can you visit the world’s largest island in a lake on an island in a lake on an island?), this book highlights the unexpected contours of geography, history, nature, politics, and culture, revealing new ways to see North America—and the hundreds of millions who call it home.

    Building these simple yet sophisticated machines introduces fundamentals of math and physics using levers, force, torsion, tension, and traction. Instructions and diagrams illustrate how to build seven authentic working model catapults, including an early Greek ballista, a Roman onager, and the apex of catapult technology, the English trebuchet. Additional projects include learning how to lash and make rope and how to construct and use a hand sling and a staff sling. The colorful history of siege warfare is explored through the stories of Alexander the Great and his battle of Tyre; Saladin, Richard the Lionheart, and the Third Crusade; pirate-turned-soldier John Crabbe and his ship-mounted catapults; and Edward I of England and his battle against the Scots at Stirling Castle.

    New York City in the 1860s was a mess: crowded, disgusting, filled with garbage. You see, way back in 1860, there were no subways, just cobblestone streets. That is, until Alfred Ely Beach had the idea for a fan-powered train that would travel underground. On February 26, 1870, after fifty-eight days of drilling and painting and plastering, Beach unveiled his masterpiece—and throngs of visitors took turns swooshing down the track. The Secret Subway will wow readers, just as Beach’s underground train wowed riders over a century ago.

    Lilting rhymes chronicle a little girl's capture and release of fireflies, one by one, capped off by a collection of fascinating firefly facts.