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.

    Who was Grace Hopper? A software tester, workplace jester, cherished mentor, ace inventor, avid reader, naval leader—AND rule breaker, chance taker, and troublemaker. Grace Hopper coined the term “computer bug” and taught computers to “speak English,” and throughout her life succeeded in doing what no one had ever done before. Delighting in difficult ideas and in defying expectations, the insatiably curious Hopper truly is “Amazing Grace” . . . and a role model for science- and math-minded girls and boys.

    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."

    He struggled in school and often got in trouble with his twin brother, Mark.Then one day Scott discovered a book about test pilots and astronauts that set him on a new path.His new focus led him to fly higher and higher, becoming first a pilot and then an astronaut, along with his brother--the first twin astronauts in history. But his greatest accomplishment of all was commanding the International Space Station and spending nearly a year in space, which set the record for the longest spaceflight by an American.This story of an ordinary boy who grew up to do extraordinary things is perfect for children, fans of Scott's adult book Endurance: A Year in Space, A Lifetime of Discovery, aspiring astronauts, and anyone who has ever tried to defy the odds. It will amaze and inspire you.

    This full color book teaches you fundamental programming and robotics skills as you build and program powerful robots that move, monitor sensors, and respond to their environments. You will build seven increasingly sophisticated robots like the BRICK SORT3R (a robot that sorts bricks by color and size), the THE SNATCH3R (an autonomous robotic arm), and LAVA R3X (a humanoid that walks and talks). Valk also covers more advanced programming techniques like data wires and variables, and shows you how to create custom remote control programs. More than 100 building and programming challenges throughout encourage you to think creatively and to apply what you've learned to invent your own robots.

    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.

    An attractive and informative volume for young stargazers.” —Kirkus Reviews“Manley’s writing swings gracefully between factual descriptions … and more lyrical observations: “All stars twinkle, but some stars also seem to wink at us... as if saying, ‘I know a secret.’ ” … Richly informative prose and intimate yet expansive art show a child’s contagious enthusiasm for the book’s subject. Includes a timeline of astronomical discoveries and suggestions for further reading.” —Publishers WeeklyDo you wonder if humansare the only beingswho wonderif they are alone in the universe?Our sun is a star.In the night sky are all kinds of stars, and orbiting those starsare planets like the ones in our own solar system.Could those planets have lifelike we do on Earth?Planet Earth is not too big, not too small, not too hot, and not too cold. It's just right.Our very own Goldilocks planet . . . .Follow a young girlas she explores these questionsin this gorgeous book about the wondrous searchfor another Goldilocks planet.

    In this lovely biography, poetic text and gorgeous paintings combine to create a portrait of Jacques Cousteau that is as magical as it is inspiring.

    Tello, who unearthed Peru's ancient cultures and fostered pride in the country's Indigenous history. Growing up in the late 1800s, Julio Tello, an Indigenous boy, spent time exploring the caves and burial grounds in the foothills of the Peruvian Andes. Nothing scared Julio, not even the ancient human skulls he found. His bravery earned him the boyhood nickname Sharuko, which means brave in Quechua, the language of the Native people of Peru.At the age of twelve, Julio moved to Lima to continue his education. While in medical school, he discovered an article about the skulls he had found. The skulls had long ago been sent to Lima to be studied by scientists. The article renewed Julio's interest in his ancestry, and he decided to devote his medical skills to the study of Peru's Indigenous history.Over his lifetime, Julio Tello made many discoveries at archaeological sites around Peru, and he worked to preserve the historical treasures he excavated. He showed that Peru's Indigenous cultures had been established thousands of years ago, disproving the popular belief that Peruvian culture had been introduced more recently from other countries. He fostered pride in his country's Indigenous ancestry, making him a hero to all Peruvians. Because of the brave man once known as Sharuko, people around the world today know of Peru's long history and its living cultural legacy.

    Magic Ramen tells the true story behind the creation of one of the world's most popular foods.Every day, Momofuku Ando would retire to his lab—a little shed in his backyard. For years, he'd dreamed about making a new kind of ramen noodle soup that was quick, convenient, and tasty for the hungry people he'd seen in line for a bowl on the black market following World War II. Peace follows from a full stomach, he believed.Day after day, Ando experimented. Night after night, he failed. But Ando kept experimenting.With persistence, creativity, and a little inspiration, Ando succeeded. This is the true story behind one of the world's most popular foods.

    So in 1985 she applied to NASA’s astronaut training program. On September 12, 1992, Mae flew into space with six other astronauts aboard the space shuttle Endeavour and made history—just like you can if you follow your dreams! A special section at the back of the book includes extras on subjects like history and math, plus a fun timeline filled with interesting trivia facts about space! With the You Should Meet series, learning about historical figures has never been so much fun!

    But what inspired her? For young Sonia, the answer was books! They were her mirrors, her maps, her friends, and her teachers. They helped her to connect with her family in New York and in Puerto Rico, to deal with her diabetes diagnosis, to cope with her father’s death, to uncover the secrets of the world, and to dream of a future for herself in which anything was possible.In Turning Pages, Justice Sotomayor shares that love of books with a new generation of readers, and inspires them to read and puzzle and dream for themselves. Accompanied by Lulu Delacre’s vibrant art, this story of the Justice’s life shows readers that the world is full of promise and possibility–all they need to do is turn the page.

    Filled with fun dinosaur facts (a T. Rex skull can weigh up to 750 pounds!) and an informational "Dinometer," Dinosaur Bones is sure to make young dinosaur enthusiasts roar with delight.

    He protected roots through harsh winters, so plants could be reborn in the spring. He trimmed flowers, spread soil, studied life cycles. And it was in this very place that George’s love of nature sprouted into something so much more—his future.

    From that day on he never stopped marveling at the universe and seeking to understand it better. Star Stuff follows Carl from his days star gazing from the bedroom window of his Brooklyn apartment, through his love of speculative science fiction novels, to his work as an internationally renowned scientist who worked on the Voyager missions exploring the farthest reaches of space. This book introduces the beloved man who brought the mystery of the cosmos into homes across America to a new generation of dreamers and star gazers.