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.

    King Arthur was a good ruler, but now he needs a good ruler. What would you do if the neighboring kingdom were threatening war? Naturally, you'd call your strongest and bravest knights together to come up with a solution. But when your conference table causes more problems than the threat of your enemy, you need expert help. Enter Sir Cumference, his wife Lady Di of Ameter, and their son Radius. With the help of the carpenter, Geo of Metry, this sharp-minded team designs the perfect table conducive to discussing the perfect plan for peace. The first in Sir Cumference series, SIR CUMFERENCE AND THE FIRST ROUND TABLE makes math fun and accessible for everyone.

    In this fascinating book, hero-astronaut Buzz Aldrin challenges curious kids to think about Mars as not just a faraway red planet but as a possible future home for Earthlings! What will your new home be like? How will you get there? What will you eat for breakfast? Find out what life might be like far, far from Earth as you navigate your way through this fun and fascinating book. What kid wouldn't want to blast off with him on this (literary) journey!

    Focuses on the childhood of the dynamic president, describing how Teddy worked hard to improve his poor health and developed a lifelong interest in nature and the conservation of natural resources.

    . . . art reinforces Harris's message that bodies come in all sizes, shapes, and colors—and that each variation is 'perfectly normal.'" —Publishers Weekly (starred review)When young people have questions about sex, real answers can be hard to find. Providing accurate, unbiased answers to nearly every imaginable question, from conception and puberty to birth control and AIDS, It's Perfectly Normal offers young people the information they need—now more than ever—to make responsible decisions and to stay healthy. Already used as a trusted resource in twenty-five countries around the world (and translated into twenty-one languages), It's Perfectly Normal marks its tenth anniversary with a thoroughly updated edition that includes the latest information on such topics as birth control, hepatitis, HIV, and adoption, among others. This definitive new edition also reflects the recent input of parents, teachers, librarians, clergy, scientists, health professionals, and young readers themselves. Back matter includes an index and a note to the reader.

    Percy Julian synthesized cortisone from soy, easing untold people's pain? These are just some of the black inventors and innovators scoring big points in this dynamic look at several unsung heroes who shared a desire to improve people's lives. Offering profiles with fast facts on flaps and framed by a funny contemporary story featuring two feisty twins, here is a nod to the minds behind the gamma electric cell and the ice-cream scoop, improvements to traffic lights, open-heart surgery, and more - inventors whose ingenuity and perseverance against great odds made our world safer, better, and brighter.

    What began as an attempt to make army hospitals safer and more effective became a lifelong mission, and remains relevant today. This new picture book biography of Florence Nightingale, from celebrated author and artist Demi, beautifully portrays the story of Florence's life and explores the long-lasting effects of her career.

    This closeup look at the evolution and behavior of horses, zebras, ponies, mules, and more examines their importance to humans throughout history, and includes photos of all major domestic breeds.

    Louis to the grandest stages in the world. Meticulously researched by both author and artist, Josephine's powerful story of struggle and triumph is an inspiration and a spectacle, just like the legend herself.

    . .When a black snake threatens to destroy the Earth And poison her people's water, one young water protectorTakes a stand to defend Earth's most sacred resource.

    Everywhere the House Sparrow went, it competed with humans for grain, becoming such a pest that in some places “sparrow catcher” became an actual job and bounties were paid to those who got rid of it.But not everyone hated the House Sparrow, and in 1852, fifty pairs were released in New York City. In no time at all, the bird had spread from coast to coast. Then suddenly, at the turn of the century, as cars took over from horses and there was less grain to be found, its numbers began to decline. As our homes, gardens, cities and farmland have changed, providing fewer nesting and feeding opportunities, the House Sparrow’s numbers have begun to decline again — though in England and Holland this decline appears to be slowing.

    She dreamed of playing the violin, but with little money for anything but the bare essentials, it was never an option...until a music teacher named Favio Chávez arrived. He wanted to give the children of Cateura something special, so he made them instruments out of materials found in the trash. It was a crazy idea, but one that would leave Ada—and her town—forever changed. Now, the Recycled Orchestra plays venues around the world, spreading their message of hope and innovation.

    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.

    Kids are invited to find out where worms live, see how they move, and understand why gardeners consider them friends with the help of this humorous and informative look at an unappreciated — and fascinating — creature.

    Until the world begins to change...Along come people with their magnificent machines which stain the land with soot. In a beautiful landscape changed by humans how will one little moth survive?A clever picture book text about the extraordinary way in which animals have evolved, intertwined with the complication of human intervention. This remarkable retelling of the story of the peppered moth is the perfect introduction to natural selection and evolution for children.