Their work has uncovered a number of the universe’s more surprising secrets, and many believe further wonders remain hidden within the theory’s tangle of equations, waiting to be exposed. In this sweeping narrative of science and culture, astrophysicist Pedro Ferreira brings general relativity to life through the story of the brilliant physicists, mathematicians, and astronomers who have taken up its challenge. For these scientists, the theory has been both a treasure trove and an enigma, fueling a century of intellectual struggle and triumph.. Einstein’s theory, which explains the relationships among gravity, space, and time, is possibly the most perfect intellectual achievement of modern physics, yet studying it has always been a controversial endeavor. Relativists were the target of persecution in Hitler’s Germany, hounded in Stalin’s Russia, and disdained in 1950s America. Even today, PhD students are warned that specializing in general relativity will make them unemployable. Despite these pitfalls, general relativity has flourished, delivering key insights into our understanding of the origin of time and the evolution of all the stars and galaxies in the cosmos. Its adherents have revealed what lies at the farthest reaches of the universe, shed light on the smallest scales of existence, and explained how the fabric of reality emerges. Dark matter, dark energy, black holes, and string theory are all progeny of Einstein’s theory. We are in the midst of a momentous transformation in modern physics. As scientists look farther and more clearly into space than ever before, The Perfect Theory reveals the greater relevance of general relativity, showing us where it started, where it has led, and where it can still take us.

    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.

    Brian Karas present the extraordinary real story of a special gorilla.Captured as a baby, Ivan was brought to a Tacoma, Washington, mall to attract shoppers. Gradually, public pressure built until a better way of life for Ivan was found at Zoo Atlanta. From the Congo to America, and from a local business attraction to a national symbol of animal welfare, Ivan the Shopping Mall Gorilla traveled an astonishing distance in miles and in impact.This is his true story and includes photographs of Ivan in the back matter.

    Bringing together an amazing array of images to explain every topic under the sun — and beyond, Picturepedia is the ultimate resource for kids ages 9– 12.Chapters on science and technology, nature, geography, culture, sports and hobbies, and history cover insects, musical instruments, spacecraft, world maps, famous discoveries, prehistoric life, and more. Every double-page spread contains a wealth of information on a given topic, with galleries, lists, sequences, facts, timelines, and much more; while every topic is illustrated with up to 100 photos, graphics, and illustrations.Perfect for gift giving, or adding to any home or school library, Picturepedia is a stimulating quick-reference that kids will come back to time and time again.

    "This is Thunder Cake baking weather," calls Grandma, as she and her granddaughter hurry to gather the ingredients around the farm. A real Thunder Cake must reach the oven before the storm arrives. But the list of ingredients is long and not easy to find . . . and the storm is coming closer all the time!Reaching once again into her rich childhood experience, Patricia Polacco tells the memorable story of how her grandma--her Babushka--helped her overcome her fear of thunder when she was a little girl. Ms. Polacco's vivid memories of her grandmother's endearing answer to a child's fear, accompanied by her bright folk-art illustrations, turn a frightening thunderstorm into an adventure and ultimately . . . a celebration!Whether the first clap of thunder finds you buried under the bedcovers or happily anticipating the coming storm, Thunder Cake is a story that will bring new meaning and possibility to the excitement of a thunderstorm.

    Packed with beautiful and engaging photos, kids will learn all about these amazing ocean animals. This Level 2 reader is carefully leveled for an early independent reading or read aloud experience, perfect to encourage the scientists and explorers of tomorrow!

    They were tiny men, dressed all in green. Nobody but Frances saw them, so her cousin Elsie painted paper fairies and took photographs of them "dancing" around Frances to make the grown-ups stop teasing. The girls promised each other they would never, ever tell that the photos weren’t real. But how were Frances and Elsie supposed to know that their photographs would fall into the hands of Sir Arthur Conan Doyle? And who would have dreamed that the man who created the famous detective Sherlock Holmes believed ardently in fairies— and wanted very much to see one? Mary Losure presents this enthralling true story as a fanciful narrative featuring the original Cottingley fairy photos and previously unpublished drawings and images from the family’s archives. A delight for everyone with a fondness for fairies, and for anyone who has ever started something that spun out of control.

    Meet Miss Misinformation, Swami Gourami, and Gladiola Gloppe (and her Soup Shoppe), and delight in a backwards poem, a poem that ever ends, and scores of others that will be changed, read, and loved by readers of every age. Whether you begin at the beginning or just open the book at random, you won't stop smiling.“Prelutsky’s a natural rhymester. He has a keen sense of what tickles kids.”—Kirkus Reviews

    Using the most up-to-date designs and theories of what it will take to establish a base on Mars, you are off on an incredible journey, over 35 million miles to the red planet. Filled with details, and vividly brought to life, this is an adventure that you are never going to forget.

    Your body is built to move.Lizzy Rockwell explains how your bones and muscles, heart and lungs, nerves and brain all work together to keep you on the go. Kids walk and skate and tumble through these pages with such exuberance that even sprouting couch potatoes will want to get up and bounce around—and that’s the ultimate goal. Studies show that American kids are becoming more sedentary and more overweight and that they carry these tendencies with them into adolescence and adulthood. Experts agree that we need to help kids make physical activity a life-long habit. Through education, information, and encouragement, this book aims to inspire a new generation of busy bodies!

    Curtis Ebbesmeyer tracks trash in the name of science. From sneakers to hockey gloves, Curt monitors the watery fate of human-made cargo that has spilled into the ocean. The information he collects is much more than casual news; it is important scientific data. And with careful analysis, Curt, along with a community of scientists, friends, and beachcombers alike, is using his data to understand and protect our ocean. In engaging text and unforgettable images, readers meet the woman who started it all (Curt’s mother!), the computer program that makes sense of his data (nicknamed OSCURS), and several scientists, both on land and on the sea, who are using Curt’s discoveries to preserve delicate marine habitats and protect the creatures who live in them. A Boston Globe-Horn Book Award Honor Book for Nonfiction.

    This hilarious and informative book is designed for anyone who is sci-curious and wants to know more about the world around them, especially the elements of everyday science that other books ignore.

    In 1903, President Theodore Roosevelt joined naturalist John Muir on a trip to Yosemite. Camping by themselves in the uncharted woods, the two men saw sights and held discussions that would ultimately lead to the establishment of our National Parks.

    After a brief tale of her own introduction to the paranormal, the author shares funny, poignant, and insightful words straight from the spirit people themselves. Together, the living and the dead seek forgiveness, solve family mysteries, find closure, settle scores, and come together for birthdays, anniversaries, and graduations. Quoting directly from her readings and séances, Priscilla reports the spirit perspective on mental illness, suicide, religion, and even the afterlife itself. For those readers interested in developing their own spirit communication skills, the last section of the book offers meditations and exercises used by the author herself, both personally and with her students. "It Will All Make Sense When You’re Dead" is chock-full of simple and entertaining wisdom, showing us how to live for today, with light hearts and kindness.

    Martin Luther King Jr. was leading a fight to win blacks the right to vote. Ground zero for the movement became Selma, Alabama.Award-winning author Elizabeth Partridge leads you straight into the chaotic, passionate, and deadly three months of protests that culminated in the landmark march from Selma to Montgomery in 1965. Focusing on the courageous children who faced terrifying violence in order to march alongside King, this is an inspiring look at their fight for the vote. Stunningly emotional black-and-white photos accompany the text.