But there was a time when people hunted the otters almost to extinction. Without sea otters to eat them, an army of hungry sea urchins grew and destroyed entire kelp forests. Fish and other animals that depended on the kelp were lost, too. But when people protected the sea otters with new laws, their numbers began to recover, and so did the kelp forests. Susannah Buhrman-Deever offers a beautifully written account of a trophic cascade, which happens when the removal of a single element affects an entire habitat. Asides that dig deeper are woven throughout Matthew Trueman’s dynamic illustrations, starring a raft of charismatic sea otters. Back matter includes more information about sea otters and kelp forests, including their importance and current status, the effects of the international fur trade on indigenous peoples, and a list of books and websites for readers who wish to continue to explore.

    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.

    Step inside the pages of this beautiful book to discover galleries of galactic matter, expertly curated to bring you the experience of a fascinating exhibition from the comfort of your own home. Planetarium features all aspects of space, from the Sun and our Solar System, to the lives of stars, the Milky Way and the Universe beyond. With stunning artwork from Chris Wormell and informative text by Professor Raman Prinja, Planetarium is the perfect gift for anyone with an interest in this fascinating field.

    But in his mind, he envisions himself traveling at a speed beyond imagining, on a beam of light. This brilliant mind will one day offer up some of the most revolutionary ideas ever conceived. From a boy endlessly fascinated by the wonders around him, Albert Einstein ultimately grows into a man of genius recognized the world over for profoundly illuminating our understanding of the universe. Jennifer Berne and Vladimir Radunsky invite the reader to travel along with Einstein on a journey full of curiosity, laughter, and scientific discovery. Parents and children alike will appreciate this moving story of the powerful difference imagination can make in any life.

    But what did it really take to get us there?The Moon landing is one of the most ambitious, thrilling, and dangerous ventures in human history. This fully illustrated book tells the stories of the 400,000 unsung heroes--the engineers, mathematicians, seamstresses, welders, and factory workers--and their innovations and life-changing technological leaps forward that allowed NASA to achieve this unparalleled accomplishment.From the shocking launch of the Russian satellite Sputnik to the triumphant splashdown of Apollo 11, Caldecott Honor winner John Rocco answers every possible question about this world-altering mission. Each step in the space race is revealed, examined, and displayed through diagrams, experiments, moments of crisis, and human stories.

    You have only minutes to find food and shelter before darkness falls and the monsters come looking for you. What do you do?The official Minecraft Beginner's Handbook might just save your life. Learn how to find resources, make a shelter, craft tools, armor and weapons, and protect yourself from monsters. With tips from Minecraft experts, inclduing developer Jeb and creator Notch himself, this is the definitive guide to surviving your first few days.

    On July 7, 2003, a twin rover named Opportunity soared through the solar system with the same mission: to find out if Mars ever had water that could have supported life.A thrilling addition to the acclaimed Scientists in the Field series, The Mighty Mars Rovers tells the greatest space robot adventure of all time through the eyes—and heart—of Steven Squyres, professor of astronomy at Cornell University and lead scientist on the mission. This suspenseful page-turner captures the hair-raising human emotions felt during the adventures with two tough rovers.

         From the moon to the stars, from the Earth to Mars, here is an exuberant celebration of our celestial surroundings that's certain to become a universal favorite among aspiring astronomers everywhere.      Includes die-cut pages and a glossary of space terms.

    His popular TV series brought whales, otters, and dolphins right into people s living rooms. Now, in this exciting picturebook biography, Dan Yaccarino introduces young readers to the man behind the snorkel. From the first moment he got a glimpse of what lived under the ocean s waves, Cousteau was hooked. And so he set sail aboard the Calypso to see the sea. He and his team of scientists invented diving equipment and waterproof cameras. They made films and televisions shows and wrote books so they could share what they learned. The oceans were a vast unexplored world, and Cousteau became our guide. And when he saw that pollution was taking its toll on the seas, Cousteau became our guide in how to protect the oceans as well."

    From silhouette-cinching corsets and combustible combs to lethal hair dyes and flammable flannel, this nonfiction book looks back at the times people have suffered pain, injury, and worse, all in the name of style. Historical examples like the tragic "Radium Girl" watchmakers and mercury-poisoned "Mad Hatters," along with more recent factory accidents, raise discussion of unsafe workplaces--where those who make the clothes are often fashion's first victims.Co-authored by a scholar in the history of textiles and dress with the founder of WORN Fashion Journal, this book is equal parts fab and frightening: a stylishly illustrated mash-up of STEAM content, historical anecdotes, and chilling stories. Nonfiction features including sidebars, sources, an index, and a list of further reading will support critical literacy skills and digging deeper with research on this topic.

    Magnets only pick up things that contain bits of iron. In this new addition to the Let's-Read-and-Find-Out Science series, veteran author Franklyn Branley explains the properties and behavior of magnets. True Kelley's charming illustrations will entertain readers as they discover for themselves what makes a magnet. Hands-on activities include making a magnet and compass.

    But in every corner of the world this age-old custom is rapidly changing. From increased trade between countries to the expansion of global food corporations like Kraft and Nestlé, current events are having a tremendous impact on our eating habits. Chances are your supermarket is stocking a variety of international foods, and American fast food chains like McDonald’s and Kentucky Fried Chicken are popping up all over the planet. For the first time in history, more people are overfed than underfed. And while some people still have barely enough to eat, others overeat to the point of illness. To find out how mealtime is changing in real homes, authors Peter Menzel and Faith D’Aluisio visited families around the world to observe and photograph what they eat during the course of one week. They joined parents while they shopped at mega grocery stores and outdoor markets, and participated in a feast where a single goat was shared among many families. They watched moms making dinner in kitchens and over cooking fires, and they sat down to eat with twenty-five families in twenty-one countries--if you’re keeping track, that’s about 525 meals! The foods dished up ranged from hunted seal and spit-roasted guinea pig to U.N.-rationed grains and gallons of Coca-Cola. As Peter and Faith ate and talked with families, they learned firsthand about food consumption around the world and its corresponding causes and effects. The resulting family portraits offer a fascinating glimpse into the cultural similarities and differences served on dinner plates around the globe.

    Using sunlight, landmarks, and scents to remember the path, she goes in search of pollen and nectar to share with the thousands of other bees in her hive. She uses her powerful sense of smell to locate the flowers that sustain her, avoids birds that might eat her, and returns home to share her finds with her many sisters. Nature lovers and scientists-to-be are invited to explore the fascinating life of a honey bee.

    . . but he only actually made it halfway. His terrible treatment of everyone he met cut his life journey short. Queen Isabella of Spain is remembered for financing Columbus’s expeditions—and for creating the Spanish Inquisition. J. Bruce Ismay commissioned the unsinkable marvel of the sea, the Titanic—and then jumped the line of women and children to escape death on a lifeboat. Readers will be fascinated well past the final curtain and will empathize with the flawed humanity of these achievers.Famous successful “failures” include:Marco Polo • Queen Isabella of Spain • King Montezuma II • Anne Boleyn • Ferdinand Magellan • Isaac Newton • Benedict Arnold • George Armstrong Custer • Vincent Van Gogh • Susan B. Anthony • Thomas Alva Edison • J. Bruce Ismay • Amelia M. Earhart • Joseph Jefferson Jackson (“Shoeless Joe”)

    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.