Then, suddenly, they died out. For thousands of years, no one knew these giant creatures had ever existed. Then people began finding fossils—bones and teeth and footprints that had turned to stone. Today, teams of experts work together to dig dinosaur fossils out of the ground, bone by fragile bone. Then they put the skeletons together again inside museums, to look just like the dinosaurs of millions of years ago.

    If you had a beaver's, you'd have orange teeth! And if you had a naked mole rat's set of teeth, you could move each one separately, like chopsticks! The animal kingdom has lots of cool teeth, but yours are pretty awesome, too!

    In fact, more people have stood on the surface of the moon than have visited the deepest spot in the ocean.Come along as we traveldown,down,down,from the surface to the bottom of the sea.Along the way you can see jellyfish that flash like a neon sign, creatures with teeth so big, they can’t close their mouths, and even a squid as long as a bus, which battles to the death with a sperm whale, the largest predator on earth.It’ll be a journey you won’t soon forget!

    All around the world -- in the sea, in the soil, in the air, and in your body -- there are living things so tiny that millions could fit on an ant's antenna. They're busy doing all sorts of things, from giving you a cold and making yogurt to eroding mountains and helping to make the air we breathe. If you could see them with your eye, you'd find that they all look different, and that they're really good at changing things into something else and at making many more microbes like themselves! From Nicola Davies comes a first exploration for young readers of the world's tiniest living organisms.

    They left behind only their impressive bones. So how can scientists know what color dinosaurs were? Or if their flesh was scaly or feathered? Could that fierce T.rex have been born with spots? In a first for young readers, the Sibert medalist Catherine Thimmesh introduces the incredible talents of the paleoartist, whose work reanimates gone-but-never-forgotten dinosaurs in giant full-color paintings that are as strikingly beautiful as they aim to be scientifically accurate, down to the smallest detail. Follow a paleoartist through the scientific process of ascertaining the appearance of various dinosaurs from millions of years ago to learn how science, art, and imagination combine to bring us face-to-face with the past.

    There are so many different kinds of birds—and those birds build so many different kinds of nests to keep their babies cozy. With playful, bouncy rhyme, Jennifer Ward explores nests large and small, silky and cottony, muddy and twiggy—and all the birds that call them home!

    Here, readers are given the actual size of an eye right on the page, and we are informed how understand this whale's body size in relation to trucks, cars, milk bottles, and hippos! With an accurate and engaging text, fully vetted by a blue whale expert, and lyrically lovely illustrations, The Blue Whale is a book that invites children in and holds their attention. Its tempo is like a pleasing melody, which means that the information never becomes too weighty or exhausting―a key thing when it comes to young readers and their enjoyment of a book!

    At the time, sharks were seen as mindless killing machines, but Eugenie knew better and set out to prove it. Despite many obstacles in her path, Eugenie was able to study the creatures she loved so much. From her many discoveries to the shark-related myths she dispelled, Eugenie's wide scientific contributions led to the well-earned nickname "Shark Lady."

    Acclaimed author/illustrator Jessie Hartland presents the fascinating 145-million-year journey of a dinsoaur: a Diplodocus longus, from its discovery in 1923 in Utah to its arrival in the hallowed halls of the Smithsonian National Museum of Natural History in Washington, D.C.

    How did they come to inhabit the island? How long will they remain?  Thoroughly researched and filled with intricate and beautiful paintings, this extraordinary book by Award-winning author and artist Jason Chin is an epic saga of the life of an island—born of fire, rising to greatness, its decline, and finally the emergence of life on new islands.

    Perfect for reading on winter days, the book features photos of real snow crystals in their beautiful diversity. Snowflake-catching instructions are also included.

    Here for a new generation of readers and explorers are the steady astronauts, clicking themselves into gloves and helmets, strapping themselves into sideways seats. Here are their great machines in all their detail and monumentality, the ROAR of rockets, and the silence of the Moon. Here is a story of adventure and discovery—a story of leaving and returning during the summer of 1969, and a story of home, seen whole, from far away.

    When Owen was stranded after the Dec 2004 tsunami, villagers in Kenya worked tirelessly to rescue him. Then, to everyone's amazement, the orphan hippo and the elderly tortoise adopted each other. Now they are inseparable, swimming, eating, and playing together. Adorable photos e-mailed from friend to friend quickly made them worldwide celebrities. Here is a joyous reminder that in times of trouble, friendship is stronger than the differences that too often pull us apart.

    A concise main text highlights how feathers are not just for flying. More curious readers are invited to explore informative sidebars, which underscore specific ways each bird uses its feathers for a variety of practical purposes. A scrapbook design showcases life-size feather illustrations.

    It's been around for centuries; from the ancient Greeks to the American Indians, everyone's chewed it. But the best kind of gum; bubble gum! wasn't invented until 1928, when an enterprising young accountant at Fleer Gum and Candy used his spare time to experiment with different recipes. Bubble-blowing kids everywhere will be delighted with Megan McCarthy's entertaining pictures and engaging fun facts as they learn the history behind the pink perfection of Dubble Bubble.