Author of the Declaration of Independence. Obsessive prehistoric mammal hunter It's true! In this little-known slice of American history, see Thomas Jefferson as never before!In the late 1700's, America was a new nation, with a vast west that held age-old secrets: Bones! Massive tusks and enormous animal skeletons were being discovered and Thomas Jefferson - politician AND scientist - was captivated. What were these giant beasts? Did they still roam on American soil? Jefferson needed to find out. Funding explorers, including the famed Lewis and Clark, Jefferson sought to find a complete prehistoric mastodon skeleton - one which would advance the young science of paleontology, but would also put this upstart young country on the world stage. Follow along on the incredible journey - full of triumphs and disappointments, discoveries and shipwrecks, ridicule and victory.Author Candice Ransom researched this amazing story for years before telling this tale, closely collaborating with Jefferson scholars and natural history experts. Jamey Christoph's moody, luminous illustrations paint the scene: A young country, a president with a thirst for knowledge, and an obsessive, years-long quest to find the prehistoric bones that would prove the importance of a growing nation.

    Henrietta spent years measuring star positions and sizes from photographs taken by the telescope at the Harvard College Observatory, where she worked. After Henrietta observed that certain stars had a fixed pattern to their changes, her discovery made it possible for astronomers to measure greater and greater distances—leading to our present understanding of the vast size of the universe.An astronomer of her time called Henrietta Leavitt “one of the most important women ever to touch astronomy,” and another close associate said she had the “best mind at the Harvard Observatory.” Henrietta Leaveitt's story will inspire young women and aspiring scientists of all kinds and includes additional information about the solar system and astronomy.

    But what if we took these big, hard-to-imagine objects and events and compared them to things we can see, feel and touch? Instantly, we'd see our world in a whole new way." So begins this endlessly intriguing guide to better understanding all those really big ideas and numbers children come across on a regular basis. Author David J. Smith has found clever devices to scale down everything from time lines (the history of Earth compressed into one year), to quantities (all the wealth in the world divided into one hundred coins), to size differences (the planets shown as different types of balls). Accompanying each description is a kid-friendly drawing by illustrator Steve Adams that visually reinforces the concept. By simply reducing everything to human scale, Smith has made the incomprehensible easier to grasp, and therefore more meaningful. The children who just love these kinds of fact-filled, knock-your-socks-off books will want to read this one from cover to cover. It will find the most use, however, as an excellent classroom reference that can be reached for again and again when studying scale and measurement in math, and also for any number of applications in social studies, science and language arts. For those who want to delve a little deeper, Smith has included six suggestions for classroom projects. There is also a full page of resource information at the back of the book.

    Why are they all alone in empty cages? Are they being punished? More than anything, he wants to be their champion—their voice—but he stutters uncontrollably. Except when he talks to animals… Then he is fluent. Follow the life of the man Time Magazine calls, "the Indiana Jones of wildlife conservation"as he searches for his voice and fulfills a promise to speak for animals, and people, who cannot speak for themselves. This real-life story with tender illustrations by Catia Chien explores truths not defined by the spoken word.

    Inspired by an Ig Nobel Prize–winning investigation of how cats behave like liquids, it introduces some of the physical properties of liquids—they adapt to fit a container, they flow like fluids—and is just pure fun. Like its inspiration, it makes you laugh, then think. Back matter includes a brief introduction to the different physical states: solid, liquid, gas.

    Meet Ruth Wakefield, the talented chef and entrepreneur who started a restaurant, wrote a cookbook, and invented this delicious dessert. But just how did she do it, you ask? That’s where things get messy!So sit back and grab a cookie to read a story—or three—about how this round, crispy, chocolatey piece of perfection came to be. Which tale is true? Well, what do you think?

    If you lived in the mountains of southern Spain, your bedroom might be carved out of a mountain. If you lived in a village in South Africa, the outside of your house might tell the story of your family. And if you lived in a floating green house in the Netherlands, you could rotate your house to watch both the sunrise and sunset. With intricate bas-relief collages, Giles Laroche uncovers the reason each home was constructed the way it was, then lets us imagine what it would be like to live in homes so different from our own. Showing the tremendous variety of dwellings worldwide—log cabins, houses on stilts, cave dwellings, boathouses, and yurts—this book addresses why each house is built the way it is. Reasons—such as blending into the landscape, confusing invaders, being able to travel with one's home, using whatever materials are at hand—are as varied as the homes themselves.

    Every morning, the rain forest calls to Zonia, and every morning she answers. She visits the sloth family, greets the giant anteater, and runs with the speedy jaguar. But one morning, the rain forest calls to her in a troubled voice. How will Zonia answer?Acclaimed author-illustrator Juana Martinez-Neal explores the wonders of the rain forest with Zonia, an Asháninka girl, in her joyful outdoor adventures. The engaging text emphasizes Zonia’s empowering bond with her home, while the illustrations—created on paper made from banana bark—burst with luxuriant greens and delicate details. Illuminating back matter includes a translation of the story in Asháninka, information on the Asháninka community, as well as resources on the Amazon rain forest and its wildlife.

    She is small. Very small. In fact so small that you'd need to look through a microscope to see her. Or you can simply open this book and take Min on an adventure to amazing places she's never seen before—like the icy glaciers of your tooth or the twisted, tangled jungle that is your shirt. The perfect book for anyone who wants to take a closer look at the world.

    They lay eggs in the shade of ginkgo trees, and as time went on, dinosaurs grew, and grew, and grew.There were so many different species of dinosaurs. Large, monstrous, and fearsome, they ruled the earth. Until gradually, there were no dinosaurs left.But they didn't disappear completely. Some dinosaurs had feathers, which grew and grew...until all through the skies were hundreds of species of birds, which flew and flew.From the bestselling creator of Dinosaur Dream Dennis Nolan comes a poetic nonfiction picture book about how dinosaurs evolved into birds.

    But books are mysteriously disappearing. Eliza Brown decides to stay awake and catch the book thief. It turns out to be a little creature called the Snatchabook who has no one to read him a bedtime story. All turns out well when the books are returned and the animals take turns reading bedtime stories to the Snatchabook.

    At the top of our world is a huge wild place called the Arctic. In the winter, it is a cold and barren land, where few animals can survive. But when spring comes, it brings with it animals from every corner of the earth. Gray whales, white cranes, wolves, and caribou begin their migrations as the snow melts, gradually making the long journey north. Once they reach their destination, they will raise their young, feast on the lush Arctic tundra, and bask in the sunlight that lasts all summer. Still, this season too must pass, and by the time winter grips the Arctic once again, the visitors have gone--only to return the following year. This lushly illustrated picture book celebrates the cyclical nature of the seasons, showcasing the barren and beautiful landscapes of the Arctic Circle and reminding the reader of the hardships and harmony of life in the wild.

    . .One night, her mother takes her to the ballet, and everything is changed. Anna finds a beauty inside herself that she cannot contain.So begins the journey of a girl who will one day grow up to be the most famous prima ballerina of all time, inspiring legions of dancers after her: the brave, the generous, the transcendently gifted Anna Pavlova.

    Porcupines are scary. Bats are ugly.Or are they . . . ?This captivating book invites you to look beyond your first impressions at these awe-inspiring animals in the wild. After all, it’s best not to judge a beast until you understand its full, lovely life.

    Is that the mast of a shipwreck? A faded pirate hat? And what's that hiding in the sand? A mandible and a clavicle, phalanges and femurs, a tibia and a fibula -- could there be a set of bones scattered across the ocean floor? And who might they belong to? A jaunty rhyme takes readers on an underwater scavenger hunt as a comical skeleton tries to put itself back together piece by piece. Make no bones about it: this rollicking read-aloud will have young ones learning anatomy without even realizing it.