Having just completed his masterpiece, The General Theory of Relativity—which provided a brand-new theory of gravity and promised a new perspective on the cosmos as a whole—he set out at once to share his excitement with as wide a public as possible in this popular and accessible book.Here published for the first time as a Penguin Classic, this edition of Relativity features a new introduction by bestselling science author Nigel Calder.

    Just about everyone has at least heard of Albert Einstein's formulation of 1905, which came into the world as something of an afterthought. But far fewer can explain his insightful linkage of energy to mass. David Bodanis offers an easily grasped gloss on the equation. Mass, he writes, "is simply the ultimate type of condensed or concentrated energy," whereas energy "is what billows out as an alternate form of mass under the right circumstances." Just what those circumstances are occupies much of Bodanis's book, which pays homage to Einstein and, just as important, to predecessors such as Maxwell, Faraday, and Lavoisier, who are not as well known as Einstein today. Balancing writerly energy and scholarly weight, Bodanis offers a primer in modern physics and cosmology, explaining that the universe today is an expression of mass that will, in some vastly distant future, one day slide back to the energy side of the equation, replacing the "dominion of matter" with "a great stillness"--a vision that is at once lovely and profoundly frightening. Without sliding into easy psychobiography, Bodanis explores other circumstances as well; namely, Einstein's background and character, which combined with a sterling intelligence to afford him an idiosyncratic view of the way things work--a view that would change the world. --Gregory McNamee

    George's parents, who have always been wary of technology, warn him about their new neighbors: Eric is a scientist and his daughter, Annie, seems to be following in his footsteps. But when George befriends them and Cosmos, their super-computer, he finds himself on a wildly fun adventure, while learning about physics, time, and the universe. With Cosmos's help, he can travel to other planets and a black hole. But what would happen if the wrong people got their hands on Cosmos? George, Annie, and Eric aren't about to find out, and what ensues is a funny adventure that clearly explains the mysteries of science. Garry Parsons' energetic illustrations add humor and interest, and his scientific drawings add clarity; there are also eight 4-page full-color inserts of scientific photos.

    How she was treated by medical and legal officials reveals a lesser-known story of human and constitutional rights, entangled with the science of pathology and enduring questions about who Mary Mallon really was. How did her name become synonymous with deadly disease? And who is really responsible for the lasting legacy of Typhoid Mary? This thorough exploration includes an author's note, timeline, annotated source notes, and bibliography.

    “The writing is direct, devastating, with no rhetoric or exploitation. The truth is in what’s said and in what is left out.”—ALA Booklist (starred review)Marion Blumenthal Lazan’s unforgettable and acclaimed memoir recalls the devastating years that shaped her childhood. Following Hitler’s rise to power, the Blumenthal family—father, mother, Marion, and her brother, Albert—were trapped in Nazi Germany. They managed eventually to get to Holland, but soon thereafter it was occupied by the Nazis. For the next six and a half years the Blumenthals were forced to live in refugee, transit, and prison camps, including Westerbork in Holland and Bergen-Belsen in Germany, before finally making it to the United States. Their story is one of horror and hardship, but it is also a story of courage, hope, and the will to survive.Four Perfect Pebbles features forty archival photographs, including several new to this edition, an epilogue, a bibliography, a map, a reading group guide, an index, and a new afterword by the author. First published in 1996, the book was an ALA Notable Book, an ALA Quick Pick for Reluctant Readers, and IRA Young Adults’ Choice, and a Notable Trade Book in the Field of Social Studies, and the recipient of many other honors. “A harrowing and often moving account.”—School Library Journal

    So are you. So is everyone.Julius Lester says, "I write because our lives are stories. If enough of those stories are told, then perhaps we will begin to see that our lives are the same story. The differences are merely in the details." Now Mr. Lester shares his own story as he explores what makes each of us special. Karen Barbour's dramatic, vibrant paintings speak to the heart of Lester's unique vision, truly a celebration of all of us.

    Not short, not tall. Not plump, not slim. Not blond, not brunette. Not gifted, not flunking out. Even her shoe size is average. She's ordinary for her school, for her town, for even the whole wide world, it seems. But everyone else? They're remarkable. She sees evidence everywhere--on TV, in magazines, and even in her classroom. Tremendously talented. Stunningly beautiful. Wildly gifted. And some of them are practically her age! Jordan feels doomed to a life of wallowing in the vast, soggy middle. So she makes a goal: By the end of the year, she will discover her great talent. By the end of the year, she will no longer be average. She will find a way to become extraordinary, and everyone will know about it! Well known for his expert ability to relate to kids in a school setting, bestselling author Andrew Clements presents a compelling story of the greatest achievement possible--personal acceptance.

    Featuring topics from the Copernican Revolution to the mind-boggling theories of recent science, The Astronomy Book uses flowcharts, graphics, and illustrations to help clarify hard-to-grasp concepts and explain almost 100 big astronomical ideas. Covering the biographies of key astronomers through the ages such as Ptolemy, Galileo, Newton, Hubble, and Hawking, The Astronomy Book details their theories and discoveries in a user-friendly format to make the information accessible and easy to follow.Series Overview: Big Ideas Simply Explained series uses creative design and innovative graphics along with straightforward and engaging writing to make complex subjects easier to understand. With over 7 million copies worldwide sold to date, these award-winning books provide just the information needed for students, families, or anyone interested in concise, thought-provoking refreshers on a single subject.

    . . on childhood. As the pace of life accelerates to hyperspeed–with too much stuff, too many choices, and too little time–children feel the pressure. They can become anxious, have trouble with friends and school, or even be diagnosed with behavioral problems. Now, in defense of the extraordinary power of less, internationally renowned family consultant Kim John Payne helps parents reclaim for their children the space and freedom that all kids need, allowing their children’s attention to focus and their individuality to flourish.Based on Payne’s twenty year’s experience successfully counseling busy families, Simplicity Parenting teaches parents how to worry and hover less–and how to enjoy more. For those who want to slow their children’s lives down but don’t know where to start, Payne offers both inspiration and a blueprint for change.• Streamline your home environment. The average child has more than 150 toys. Here are tips for reducing the amount of toys, books, and clutter–as well as the lights, sounds, and general sensory overload that crowd the space young imaginations need in order to grow.• Establish rhythms and rituals. Predictability (routines) and transparency (knowing the day’s plan) are soothing pressure valves for children. Here are ways to ease daily tensions, create battle-free mealtimes and bedtimes, and tell if your child is overwhelmed.• Schedule a break in the schedule. Too many activities may limit children’s ability to motivate and direct themselves. Learn how to establish intervals of calm in your child’s daily torrent of constant doing–and familiarize yourself with the pros and cons of organized sports and other “enrichment” activities.• Scale back on media and parental involvement. Back out of hyperparenting by managing your children’s “screen time” to limit the endless and sometimes scary deluge of information and stimulation. Parental hovering is really about anxiety; by doing less and trusting more, parents can create a sanctuary that nurtures children’s identity, well-being, and resiliency as they grow–slowly–into themselves. A manifesto for protecting the grace of childhood, Simplicity Parenting is an eloquent guide to bringing new rhythms to bear on the lifelong art of parenting.

    One of the most popular series ever published for young Americans, these classics have been praised alike by parents, teachers, and librarians.

    A book about computers, from the animated television series on the Learning Channel.

    The class wants to help look for her. Ms. Frizzle says, "The best way to find a frog is to be a frog!" So, the kids take a ride on the Magic School Bus. Join them as they shrink to frog size and learn all about animal habitats!

    Newton. Salk. Oppenheimer.Science can change the world . . . but can it go too far? Eleven-year-old Ellie has never liked change. She misses fifth grade. She misses her old best friend. She even misses her dearly departed goldfish. Then one day a strange boy shows up. He’s bossy. He’s cranky. And weirdly enough . . . he looks a lot like Ellie’s grandfather, a scientist who’s always been slightly obsessed with immortality. Could this pimply boy really be Grandpa Melvin? Has he finally found the secret to eternal youth?Lexile recommendation: 550

    With just the simple tools around you—your imagination, basic art supplies, household objects, and natural materials—you can transform your family life, and have so much more fun! Amanda Soule has charmed many with her tales of creativity and parenting on her blog, SouleMama. Here she shares ideas and projects with the same warm tone and down-to-earth voice. Perfect for all families, the wide range of projects presented here offers ideas for imaginative play, art and crafts, nature explorations, and family celebrations. This book embraces a whole new way of living that will engage your children’s imagination, celebrate their achievements, and help you to express love and gratitude for each other as a family.

    Concert-goers, called "hippies," traveled from all over the country to see their favorite musicians perform. Famous artists like The Grateful Dead played day and night in a celebration of peace, love, and happiness. Although Woodstock lasted only three days, the spirit of the festival has defined a generation and become a symbol of the "hippie life."