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It's easy to count three of something-- just add them up. But how do you count zero, a number that is best defined by what it's not? Can you see it? Can you hear it? Can you feel it? This important math concept is beautifully explored in a way that will inspire children to find zero everywhere--from the branches of a tree by day to the vast, starry sky by night.
Identifies and discusses the more than thirty different kinds of trees found in North America.
The Callery pear tree standing at the base of the World Trade Center is almost destroyed on September 11, but it is pulled from the rubble, coaxed back to life, and replanted as part of the 9/11 memorial.
In 1996, Allan Weisbecker sold his home and his possessions, loaded his dog and surfboards into his truck, and set off in search of his long-time surfing companion, Patrick, who had vanished into the depths of Central America. In this rollicking memoir of his quest from Mexico to Costa Rica to unravel the circumstances of Patrick's disappearance, Weisbecker intimately describes the people he befriended, the bandits he evaded, the waves he caught and lost en route to finding his friend. In Search of Captain Zero is, according to Outside magazine, "A subtly affecting tale of friendship and duty. [It] deserves a spot on the microbus dashboard as a hell of a cautionary tale about finding paradise and smoking it away." In Search of Captain Zero: A Surfer's Road Trip Beyond the End of the Road is a Booksense 76 Top Ten selection for September/October.
A deeply moving story about community and resilience, from the point-of-view of the Callery pear tree that survived the attacks on September 11, from Eisner Award-nominated author-illustrator Sean Rubin. * "A resonant, beautifully rendered testament to life and renewal." —Kirkus, starred review In the 1970s, nestled between the newly completed Twin Towers in New York City, a Callery pear tree was planted. Over the years, the tree provided shade for people looking for a place to rest and a home for birds, along with the first blooms of spring. On September 11, 2001, everything changed. The tree’s home was destroyed, and it was buried under the rubble. But a month after tragedy struck, a shocking discovery was made at Ground Zero: the tree had survived. Dubbed the “Survivor Tree,” it was moved to the Bronx to recover. And in the thoughtful care of the New York City Department of Parks and Recreation, the Callery pear was nursed back to health. Almost a decade later, the Survivor Tree returned home and was planted in the 9/11 Memorial to provide beauty and comfort...and also hope. This is the story of that tree—and of a nation in recovery. Told from the tree’s perspective, This Very Tree is a touching tribute to first responders, the resilience of America, and the restorative power of community.
We all know the basics of punctuation. Or do we? A look at most neighborhood signage tells a different story. Through sloppy usage and low standards on the internet, in email, and now text messages, we have made proper punctuation an endangered species. In Eats, Shoots & Leaves, former editor Lynne Truss dares to say, in her delightfully urbane, witty, and very English way, that it is time to look at our commas and semicolons and see them as the wonderful and necessary things they are. This is a book for people who love punctuation and get upset when it is mishandled. From the invention of the question mark in the time of Charlemagne to George Orwell shunning the semicolon, this lively history makes a powerful case for the preservation of a system of printing conventions that is much too subtle to be mucked about with.
“Prepared for the most inquisitive readers, bringing answers to fresh questions they may not even have thought to ask” —Smithsonian Magazine “This is a multi-dimensional triumph.” —Larry Gonick, Overeducated Cartoonist & Author of Cartoon Guide Series “An instant classic—a fun, fascinating must-read for any child or kid at heart.” —Lindsay Bierman, Executive Director & CEO, Exploratorium An unconventional, engaging, and delightful counting book for curious minds that playfully uses numbers as an entry-point to discover the amazing, diverse, fact-filled world of wonders all around us. Do you know… How many bones an octopus has? How many breaths you take a day? How many times a black bear’s heart beats each hour? How many moons Mars has? How many miles a trip to the moon and back is? How about a trip to Saturn? How many leaves are on an oak tree? How many meters there are between you and the clouds? What happens when you keep placing zeroes at the end of numbers? The answers to these questions appear in this book—along with many more amazing facts that celebrate the numbers zero to nine and powers of ten numbers ten to nine billion. Starting with zero instead of one, this whimsical, fact-filled counting book will delight readers of all ages. Combining elements of traditional and advanced counting books with a sense of wonder and curiosity about the world around us, Octopuses Have Zero Bones encourages young readers to fall in love with numbers and the world around them. ? Richly imagined and playfully illustrated, Octopuses Have Zero Bones is a great choice for children, families, and inquisitive people of all ages, and it is a strong addition to any classroom or school library. The book’s layered content offers an easy and attractive point of entry as well as the possible to explore and understand more at multiple levels.
“Poetic and meditative, this true-life fable about a tree that survived 9/11 commemorates the attack while evoking a resilient spirit and the healing power of nature. Ann Magee’s spare and lyrical text and Nicole Wong’s soft-edged art afford ample space for young readers to reflect, to hope and to envision a future where peace takes root.” —Carole Boston Weatherford, author of Newbery Honor book BOX “Branches of Hope is a tribute to resilience and hope, a gentle way to talk with our youngest readers about the memory of 9/11.” —Kate Messner, author of The Brilliant Deep: Rebuilding the World's Coral Reefs The branches of the 9/11 Survivor Tree poked through the rubble at Ground Zero. They were glimpses of hope in the weeks after September 11, 2001. Remember and honor the events of 9/11 and celebrate how hope appears in the midst of hardship. The Survivor Tree found at Ground Zero was rescued, rehabilitated, and then replanted at the 9/11 Memorial site in 2011. This is its story. In this moving tribute to a city and its people, a wordless story of a young child accompanies the tree's history. As the tree heals, the girl grows into an adult, and by the 20th anniversary of 9/11, she has become a firefighter like her first-responder uncle. A life-affirming introduction to how 9/11 affected the United States and how we recovered together.
Graph algorithms is a well-established subject in mathematics and computer science. Beyond classical application fields, such as approximation, combinatorial optimization, graphics, and operations research, graph algorithms have recently attracted increased attention from computational molecular biology and computational chemistry. Centered around the fundamental issue of graph isomorphism, this text goes beyond classical graph problems of shortest paths, spanning trees, flows in networks, and matchings in bipartite graphs. Advanced algorithmic results and techniques of practical relevance are presented in a coherent and consolidated way. This book introduces graph algorithms on an intuitive basis followed by a detailed exposition in a literate programming style, with correctness proofs as well as worst-case analyses. Furthermore, full C++ implementations of all algorithms presented are given using the LEDA library of efficient data structures and algorithms.
#1 NEW YORK TIMES BEST SELLER • In this urgent, authoritative book, Bill Gates sets out a wide-ranging, practical—and accessible—plan for how the world can get to zero greenhouse gas emissions in time to avoid a climate catastrophe. Bill Gates has spent a decade investigating the causes and effects of climate change. With the help of experts in the fields of physics, chemistry, biology, engineering, political science, and finance, he has focused on what must be done in order to stop the planet's slide to certain environmental disaster. In this book, he not only explains why we need to work toward net-zero emissions of greenhouse gases, but also details what we need to do to achieve this profoundly important goal. He gives us a clear-eyed description of the challenges we face. Drawing on his understanding of innovation and what it takes to get new ideas into the market, he describes the areas in which technology is already helping to reduce emissions, where and how the current technology can be made to function more effectively, where breakthrough technologies are needed, and who is working on these essential innovations. Finally, he lays out a concrete, practical plan for achieving the goal of zero emissions—suggesting not only policies that governments should adopt, but what we as individuals can do to keep our government, our employers, and ourselves accountable in this crucial enterprise. As Bill Gates makes clear, achieving zero emissions will not be simple or easy to do, but if we follow the plan he sets out here, it is a goal firmly within our reach.