Some old-time scientists thought that because they were so big, all they could do was float in water. Boy, were they wrong! Even today, once-common notions about dinosaurs are being revised as new discoveries are made. This lively book about the perennially popular subject of dinosaurs offers fascinating insight into how certain theories were formed, and then how those theories were proved or disproved. It demonstrates that scientific thought is as creative as it is logical and invites budding scientists to come up with their own ideas.

    Full-color illustrations.

    Built in MMVIII. Roman numerals are everywhere---on clocks, in books, and on buildings. But what do Roman numerals mean, and how does one use them? Fun with Roman Numerals is a straightforward and appealing introduction to a timely topic. On a scale of I to X, it's an XI!

    Explore Florida's river-laced Everglades, travel down the white water rapids of the Grand Canyon, trek across the deserts of Death Valley and scale the soaring summits of the Rocky Mountains with this book that brings you up close to nature's greatest adventures. Packed with maps and fascinating facts about the flora and fauna unique to each park, this fully-illustrated coast-to-coast journey documents the nation’s most magnificent and sacred places—and shows why they should be preserved for future generations to enjoy. With maps and information about flora and fauna found in each of the 21 icon parks portrayed, this is a fantastic celebration of the great outdoors. Parks include: Acadia, Badlands, Big Bend, Biscayne, Bryce Canyon, Channel Islands, Death Valley, Denali, Everglades, Glacier, Glacier Bay, Grand Canyon, Great Smoky, Mountains, Hawaii volcanoes, Isle Royal, Mesa Verde, Olympic, Sequoia and Kings Canyon, Virgin Islands, Yellowstone and Yosemite.

    One by one, many of the seeds are lost -- burned by the sun, fallen into the ocean, eaten by a bird. But some survive the long winter and, come spring, sprout into plants, facing new dangers -- trampled by playing children, picked as a gift for a friend. Soon only the tiniest seed remains, growing into a giant flower and, when autumn returns, sending its own seeds into the wind to start the process over again. Eric Carle's eloquent text and brilliant collages turn the simple life cycle of a plant into an exciting story, a nature lesson, and an inspiring message of the importance of perseverance.

    Easy to read and easy to understand, Me and My Amazing Body helps children appreciate everything their amazing bodies can do.

    A hungry Curious George snatches a pail of bananas from the zoo keeper. Though he shouldn't have taken the bananas, George soon changes the zookeeper's shouts to praise with his clever, helpful ways.

    With artwork from Katie Scott of Animalium fame, Botanicum gives readers the experience of a fascinating exhibition from the pages of a beautiful book. From perennials to bulbs to tropical exotica, Botanicum is a wonderful feast of botanical knowledge complete with superb cross sections of how plants work.

    Every link in a food chain is important because each living thing depends on others for survival, no matter how big or how small. Lively drawings from Holly Keller illustrate the clear, simple text by Patricia Lauber.This is a Stage 2 Let's-Read-and-Find-Out, which means the book explores more challenging concepts for children in the primary grades. Let's-Read-And-Find-Out is the winner of the American Association for the Advancement of Science/Subaru Science Books & Films Prize for Outstanding Science Series.Supports the Common Core Learning Standards and Next Generation Science Standards

    Told in clear and easy terms ("Peck, peck, peck! This noisy woodpecker is looking for food inside a tree trunk") and featuring bright, cheerful illustrations, Hello, World! makes learning fun for young children. And each sturdy page offers helpful prompts for engaging with your child. It's a perfect way to bring science and nature into the busy world of a toddler, where learning never stops.Look for all the books in the Hello, World! series: -Solar System-Weather-Backyard Bugs-Birds-Dinosaurs-My Body-How Do Apples Grow?-Ocean Life-Moon Landing-Pets-Arctic Animals-Construction Site-Rainforest Animals-Planet Earth -Reptiles-Cars and Trucks -Music-Baby Animals-On the Farm

    Read about the eight planets in our solar system and Earth's special place in it. This book also includes instructions for making your own solar system mobile, and on the new "Find Out More" page learn how to track the moon and visit the best plant web sites.

    Whether it is sailing leaky boats in the Atlantic Ocean or joining an ambulance corps to race to the rescue, living on the edge is required behavior for an astronaut.Sibling rivalry? Check. An identical twin brother who both cheers you on and eggs you on is the perfect motivator.Inspiration? Check. Finding the right book can unexpectedly change the course of your life by providing a dream and a road map for achieving it.Courage? Check. Mastering skills that could mean the difference between life and death as a fighter pilot, test pilot, and astronaut takes bravery.Endurance? Check. The grit and can-do spirit that enables you to get up every time you're knocked down and fuels the power to meet each challenge head-on and then ask, "What's next?"Scott Kelly believes, "If you can dream it, you can do it." This checklist put Scott on a rocket that launched him into space, allowed him to break a record during his inspiring year aboard the International Space Station, and showed human beings the qualities needed to go from Earth to Mars--and beyond."An engaging and high-flying read for nonfiction and space lovers alike." -- School Library Journal "Those who are intrigued by space travel will find this a fascinating book." -- Booklist

    Yet there is much more to the monarch than its distinctive presence and mythic journeying. In Monarchs and Milkweed, Anurag Agrawal presents a vivid investigation into how the monarch butterfly has evolved closely alongside the milkweed--a toxic plant named for the sticky white substance emitted when its leaves are damaged--and how this inextricable and intimate relationship has been like an arms race over the millennia, a battle of exploitation and defense between two fascinating species.The monarch life cycle begins each spring when it deposits eggs on milkweed leaves. But this dependency of monarchs on milkweeds as food is not reciprocated, and milkweeds do all they can to poison or thwart the young monarchs. Agrawal delves into major scientific discoveries, including his own pioneering research, and traces how plant poisons have not only shaped monarch-milkweed interactions but have also been culturally important for centuries. Agrawal presents current ideas regarding the recent decline in monarch populations, including habitat destruction, increased winter storms, and lack of milkweed--the last one a theory that the author rejects. He evaluates the current sustainability of monarchs and reveals a novel explanation for their plummeting numbers.Lavishly illustrated with more than eighty color photos and images, Monarchs and Milkweed takes readers on an unforgettable exploration of one of nature's most important and sophisticated evolutionary relationships.

    A perfect way for Royals fans, and baseball fans everywhere, to share that magic night with their children and commemorate it themselves with beautiful illustrations and clever rhymes.

    Turns out, trying something new isn't always easy, but sometimes, it's the hardest work that leads to the greatest reward.