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Introduces the banded sea snake, also known as the sea krait, and describes its habitat, appearance, and habits. -
Los humanos han usado botes por cientos de años. Vea cómo los barcos se han convertido en las poderosas embarcaciones oceánicas que usamos hoy. -
As the world's population expands, so too does the risk of communicable disease and global pandemics. Consequently, healthcare has assumed a greater centrality in the public consciousness both in the United States and around the world. With various national and international organizations dedicated to epidemiological research and disease control, societal welfare has become an increasingly significant aspect of public policy. The historical, legal, and scientific factors that form the basis of public health locally and globally are the subjects of this relevant and revealing volume. -
Many beagles and other scent-driven canines have been used successfully to sniff out bombs, drugs, and lost people, too. Today they are even used to help the many people who have had to fight the rising problem of bedbug infestation. Age-appropriate bilingual text explores the life, training, and work of these bedbug-sniffing dogs. -
The detailed illustrations and photographs in this fascinating book take us into the complicated, hectic world of the beehive, where we observe the rigidly structured "class system" of the honeybee, with its worker bees, drones, and queen. The complex body and internal systems of the bee are examined, as the history, honey production, construction of the honeycomb, reproduction, and colony building are discussed. -
Analiza los conceptos básicos del entrenamiento para el béisbol, incluido el calentamiento, las prácticas de bateo y campo y el trabajo en equipo. -
Presenta la historia de la bicicleta y las muchas mejoras que se han producido a medida que se desarrolló -
Did you know that riders had to use stepstools to get onto the first bikes? Bicycles were once regarded as a nuisance to horses. Read about how they've become a significant part of our lives. -
Amazing mountain animals fill the pages of this exciting bilingual series. Redesigned with new features, each book invites readers to discover the world of creatures that make their home in high places. Young learners will read about each animals unique physical characteristics, behavior, and adaptations to their environment. Through fascinating facts and brilliant photographs, these books paint a vibrant picture of the incredible array of animal life in the mountains. -
This book explains the latest scientific thought behind biodiversity and why a variety of species on our planet is essential. Further, the author explains recent efforts to preserve our world by curbing global warming. -
Introduces the black mamba and describes the physical characteristics, life cycle, habitat, and predatory behavior. -
Introduces the boa constrictor and describes their physical characteristics, life cycle, habitat, and predatory behavior. -
Humans have used boats for hundreds of years. See how boats have changed into the mighty ocean-going vessels we use today. -
Bilingual learners will be thrilled with this outdoor guidebook about bobcats. They are rarely seen in the open, but thousands of these animal hunt throughout much of North America. These powerful predators can take down prey that is much larger than they are. Engaging text in English with standard Latin-American Spanish translation is supported by dramatic, colorful photographs. -
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Luis loves to read, but soon his house in Colombia is so full of books there's barely room for the family. What to do? Then he comes up with the perfect solution: a traveling library! He buys two donkeys, Alfa and Beto, and travels with them throughout the land, bringing books and reading to the children in faraway villages. Beautiful! -
Imagine traveling at half the speed of a jet plane without ever leaving the ground! Students will discover the technology that makes such speeds possible, from special tracks and safety precautions to aerodynamically designed trains. What are the limits to the speed of trains? What imposes those limits? Students also will read about the future of passenger train travel, from flying trains to trains that use huge magnets to levitate inches or centimeters off the track. Some trains safely reach speeds of more than 200 mph! -
Most of us are familiar wiht traveling on a bus. Bus drivers help people in our communities travel from place to place. City bus drivers and school bus drivers follow many rules to keep passengers safe, In bus Drivers, read about hoe these community workers help people every day. -
When Henry Ford put an engine on a horse carriage, he had no idea that his simple invention would revolutionize the world. Read about how an everyday part of our lives started with a single, simple concept. -
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Discute el calentamiento global, su efecto sobre los casquetes polares de la Antártida y el efecto que su fusión tiene sobre el nivel del mar, a través de una historia ficticia en formato de novela gráfica sobre una expedición científica a la Antártida. -
¡El Salto Ángel de Venezuela es 16 veces más alto que el Salto Niagra! Cataratas Angel captará la atención de los lectores jóvenes con su historia única y alturas vertiginosas. -
The spread of harmful chemicals and biological organisms can injure and kill thousands of people and make an infected area unlivable for some time to come. In the age of modern terrorism, many people fear militant organizations will unleash chemical and biological weapons in public places. This book provides readers with an overview of what these weapons are, who uses them and why, and explains how much of a threat they are to our way of life. Over time, countries have pledged to ban the use of CBWs in various agreements, with limited success. -
Chemistry is often a daunting subject for students, fostering a bewilderment that sets in upon their first encounter with the Periodic Table. This book demystifies an important aspect of the subject--chemical reactions--and demonstrates exactly how fascinating and fun chemistry can be. Starting out by explaining just what a chemical reaction is--and what it isn't--the book details in accessible language the various kinds of chemical reactions that are possible. It draws upon readily comprehensible everyday examples, like rusting metal, baking bread, battery power, digestion, rotting eggs, and burning candles. The book then turns to a survey of the history of chemical research, beginning in the Ancient and Classical Worlds, progressing to the Medieval alchemists and Renaissance innovators, and ending with the leading lights of modern chemistry. Readers will be introduced to luminaries such as Antoine Lavoisier, John Dalton, Louis Pasteur, Dmitri Mendeleyev, the Curies, and Ernest Rutherford. It concludes with an inspiring examination of how current research and cutting edge developments are using chemistry and chemical reactions to save lives and insure continued life on Earth. This book amply illustrates the accessibility, relevance, and gee-whiz fun of chemical reactions. -
Curious readers will discover how the world's climate is changing from the greenhouse effect and the ozone hole, and what we are doing to help our planet. -
Introduces Coast Guard cutters and other boats and the work that they do in storms and floods, in law enforcement, and in other situations. -
This is a well-organized look as coastal regions: what shapes them, some environmental threats, and their usefulness in industry and tourism. Several beautiful and interesting coastlines are highlighted, including Cancun and the Great Barrier Reef. Readers will learn about each coastline's location, population, local industries, and environmental threats. -
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Este libro invita a los lectores al mundo de los animals que hacen viajes periódicos por tierra, aire o agua, y explora cómo se orientan en sus viajes. -
Journey high into the mountains to meet the worlds largest flying land bird. Soar among the clouds with this graceful bird as it searches for food. In Condors/Cndores, learn how this incredible animal has been brought back from the brink of extinction. This special English-Spanish bilingual edition enables children to work on their second-language skills as they develop strengths in their primary language. -
Introduces the copperhead, the most venomous snake in the eastern and central United States, and describes its habitat, appearance, and habits. -
The Internet brought about a total revolution in the world of information. Today, anyone with an Internet connection can access a wealth of information online. As our access to data increases, copyright laws struggle to keep up. This book examines how copyright law has been applied to online content, the emerging open source movement, fair use, proper citation practice, and the ethics of using and citing online information. It is an invaluable resource for today's students.
