They did such a good job that, by 1926, no gray wolf packs were left in the park. Over the following decades, virtually every other part of the park's ecosystem was affected by the loss of the wolves --- from the animals who were their prey, to the plants that were the food for that prey, to the streams that were sheltered by those plants --- and the landscape was in distress. So, starting in 1995, in an attempt to reverse course, the government reintroduced gray wolves to the park. Over time, animal populations stabilized, waterways were restored and a healthy ecosystem was recreated across the land. It's a striking transformation, and a fascinating tale of life's complicated interdependencies.Jude Isabella's thoroughly researched, expert-reviewed text and Kim Smith's beautiful nature art bring science to life in this captivating story of renewal. Readers will recognize just how complex an ecosystem is and learn about the surprising interconnectedness of its members. Biodiversity, ecosystems, the food chain, habitats, needs of living things and the importance of human stewardship of the environment are all covered through this real-life example, offering direct links to earth and life science curriculums. Food web infographics help reinforce the information. A glossary and index add to the book's usefulness.

    But not all of them are real. Just like the old game in this book’s title, two out of every three stories are completely true and one is an outright lie. Can you guess which? It’s not going to be easy. Some false stories are based on truth, and some of the true stories are just plain unbelievable. And they’re all accompanied by dozens of photos, maps, and illustrations. Amaze yourself and trick your friends as you sort out the fakes from the facts!

    

    To achieve this goal, they focuses on two central questions: "What Are We?" which highlights your place as a planet dweller in an evolving universe, guiding you to better understand where we came from and how we formed; and "How Do We Know?" which provides insights into how the process of science can teach us more about what we are.

    but only half as tall as an ostrich, which is half as tall as a giraffe... twenty times smaller than a California Redwood! How do they compare to the tallest buildings? To Mt. Everest? To stars, galaxy clusters, and . . . the universe?

    Discover Borneo’s Gomantong Cave, where literally millions of bats, cockroaches, spiders, and rats coexist—in pitch darkness. Learn about mythical creatures like the Mongolian Death Worm—and scarily real ones like killer bees, which were accidentally created by scientists in the 1950s. Visit New Orleans’s Beauregard-Keyes house, where Civil War soldiers are said to still clash in the front hall. Plus ghost stories from around the world, a cross-cultural study of vampires, and how to transform into a zombie with makeup. Each entry includes a “Fright Meter” measurement from 1 to 3, because while being scared is fun, everyone has their limit. A 2017 YALSA Quick Pick for Reluctant Readers.

    But there are things that can take over the bodies and brains of innocent creatures, turning them into senseless slaves. Meet nature's zombie makers--including a fly-enslaving fungus, a suicide worm, and a cockroach-taming wasp--and their victims.

    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.

    Observing, sorting, and classifying their finds taught these kids scientific skills--and sometimes led to groundbreaking discoveries. Author Heather Montgomery has all the science flair of a new Bill Nye. Book includes the Heather's tips for responsible collecting.

    Bugs, of all kinds, were considered to be “born of mud” and to be “beasts of the devil.”  Why would anyone, let alone a girl, want to study and observe them? One of the first naturalists to observe live insects directly, Maria Sibylla Merian was also one of the first to document the metamorphosis of the butterfly. In this nonfiction biography, illustrated throughout with full-color original paintings by Merian herself, author Joyce Sidman paints her own picture of one of the first female entomologists and a woman who flouted convention in the pursuit of knowledge and her passion for insects.

    But, as adolescents are all too aware, there's a tremendous downside: When we do this to groups of people it can cause great harm. Here's a comprehensive introduction to the science behind stereotypes that will help young people make sense of why we classify people, and how we can change our thinking. It covers the history of identifying stereotypes, secret biases in our brains, and how stereotypes affect our sense of self. Most importantly, it covers current research into how science can help us overcome our biases, offering hope for a future where stereotypes are less prevalent and the world is more fair for everyone.Written by award-winning author Tanya Lloyd Kyi, this timely and hopeful book addresses the issues of discrimination, racism, sexism, ableism and homophobia and offers concrete suggestions on how to make change. It uses scientific inquiry and loads of relatable and interesting examples to explore these uncomfortable topics in age-appropriate and engaging ways. Chapters, sidebars and colorful illustrations break the text into manageable chunks. Besides the many ways this book could be used to inspire frank and in-depth discussions on the importance of addressing stereotypes and bias, it also links to many science and social studies curriculum topics. Back matter includes an extensive list of sources, suggestions for further reading and an index.

    But after the stock market crashed in 1929, Vivien lost all his savings. Then he heard about a job opening at the Vanderbilt University medical school under the supervision of Dr. Alfred Blalock. Vivien knew that the all-white school would never admit him as a student, but he hoped working there meant he was getting closer to his dream.As Dr. Blalock's research assistant, Vivien learned surgical techniques. In 1943, Vivien was asked to help Dr. Helen Taussig find a cure for children with a specific heart defect. After months of experimenting, Vivien developed a procedure that was used for the first successful open-heart surgery on a child. Afterward, Dr. Blalock and Dr. Taussig announced their innovative new surgical technique, the Blalock-Taussig shunt. Vivien's name did not appear in the report.Overcoming racism and resistance from his colleagues, Vivien ushered in a new era of medicine children's heart surgery. Tiny Stitches is the compelling story of this incredible pioneer in medicine.

    Bob was a studious planner who wanted to grow up to be a doctor. Joe dreamed of making his fortune in show business and loved magic tricks and problem-solving.When an accident left Bob recovering in a darkened basement, the brothers began experimenting with ultraviolet light and fluorescent paints. Together they invented a whole new kind of color, one that glows with an extra-special intensity--Day-Glo.This cover reproduction is not printed with Day-Glo colors. The actual book, however, is printed using three Day-Glo colors: Saturn Yellow, Fire Orange, and Signal Green.

    Grow geodes in eggshells, make a bouncing ball out of slime, and build a rubber band solar system!With kid-friendly experiments and crafts, science becomes pure fun and the scientific method is put into practice. The clear photographs and fact-filled spreads make following along with the experiments' step-by-step instructions easy, and keeps budding scientists entertained for hours.Maker Lab makes learning a blast!

    All it takes is one:One coral gamete to start a colonyOne person to make a differenceOne idea to change the worldThe ongoing efforts to save and rebuild the world's coral reefs--with hammer and glue, and grafts of newly grown coral--are the living legacy of Ken Nedimyer.Kate Messner and Matthew Forsythe tell the true story of the coral restoration pioneer in this brilliant tribute to the wonders of nature and the power of human ingenuity.