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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. -
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. -
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! -
Humans have used boats for hundreds of years. See how boats have changed into the mighty ocean-going vessels we use today. -
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. -
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. -
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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! -
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. -
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. -
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The largest continent in the world also has the largest variety of people, land, and animals of any continent on Earth. Students will be delighted with the beautiful images as they read about this bountiful continent. -
Artificial Intelligence is one of the most intriguing and difficult technological advances ever explored by man. It is the study of intelligent behavior and the attempt to recreate it through technology. This beginner's guide explores, not only the technology behind AI, but the current and future benefits of further exploration. -
Imagine being in a place where the temperature can drop to -125 degrees Fahrenheit! That's how cold it can get on the world's biggest glacier. Students will be transported to the icy chill of Antarctica in this cool book. -
Because of the biological similarities between many animals and humans, scientists can learn about diseases, and find out how humans might react to medicines, cosmetics, chemicals, and other products by testing them on animals first. According to the Humane Society of the United States, more than twenty-five million animals are used in research, testing, and education each year. Readers learn about the various philosophies on animal testing, what tests are used, and how they are performed. The book presents the pros and cons of animal testing and some of the alternative methods to animal testing that scientists are developing today. -
Venezuela's Angel Falls is 16 times higher than Niagara Falls! Angel Falls will capture young readers' attention with its unique history and dizzying heights. -
Bundle up for a fact-finding mission to the Arctic. Readers will learn about Arctic plants and animals, and how they depend on each other for survival in the coldest ecosystem on Earth. -
Your curious readers will learn that going into space is no small endeavor. This book explains the history and function of space missions and how they have expanded our knowledge of the universe. -
This colorful book explores the history and function of satellites and how they have helped scientists explore outerspace. Readers will also learn that we rely on satellites for communications, mapping, and many other things. -
This fascinating book explores the history and work of astronauts, the rigors of astronaut training, and what it is like to live and work in space. Brief bios on our most famous astronauts are also included. -
In 1878 in Denison, Texas, a man named John Martin looked up into the sky and saw something he could not explain. Americans have been hooked on the possibility of beings from space visiting Earth ever since. A sense of wonder, and reality, are brought to some popular legends of alien encounters and sightings in this volume. The final chapter explores how these legends have become even more popular thanks to movies, television, and literature. -
Your readers will get a close look at planes such as the Airbus A380, which is the world's largest airliner, and the Lockheed Martin F-35B, which is a short take-off and vertical landing combat aircraft. Readers learn about the engine and design that make flight possible for each aircraft. -
Aircraft carriers are truly the fortresses of the sea! Students will get an inside-out view of these incredible floating cities, from how they are constructed to how they function as important parts of a country's defense. Students also will learn about the various aircraft that are on board and the crew that keeps aircraft carriers in ship shape! -
Los trenes fueron una de las primeras formas mecanizadas en que los humanos solían viajar largas distancias. Los lectores verán cómo cambiaron la forma del país al transportar humanos y suministros de costa a costa. -
¡Imagínese viajar a la mitad de la velocidad de un avión sin abandonar el suelo! Los estudiantes descubrirán la tecnología que hace posible tales velocidades, desde pistas especiales y precauciones de seguridad hasta trenes diseñados aerodinámicamente. ¿Cuáles son los límites de la velocidad de los trenes? ¿Qué impone esos límites? Los estudiantes también leerán sobre el futuro del viaje en tren de pasajeros, desde trenes voladores hasta trenes que usan imanes enormes para levitar pulgadas o centímetros de la vía. ¡Algunos trenes alcanzan con seguridad velocidades de más de 200 mph! -
¡Estos trenes de pasajeros pueden viajar más de 180 millas por hora! Estas maravillas modernas de la tecnología fascinarán a cualquier lector. -
El transbordador espacial ha llevado a cientos de personas al espacio desde su primer vuelo. La convincente historia de las exploraciones del transbordador espacial pondrá a sus lectores en órbita. -
Las tormentas son un tema fascinante y una excelente manera de crear interés en la ciencia. Esta serie utiliza fotos dramáticas a todo color para captar la atención de los estudiantes y el auténtico idioma español. Cada libro explica un tipo de tormenta: cómo se ve, cómo se forma, el daño que puede causar y cómo las personas pueden protegerse del peligro. Las características de la serie. -
El tenis tiene millones de fanáticos. Niños y niñas de todo el país están recogiendo cohetes. Los lectores aprenderán cómo realizar muchos cambios diferentes y encontrarán otra información esencial en fotos claras y un texto fácilmente accesible. -
Este libro ofrece a los estudiantes una mirada profunda sobre cómo funcionan los telescopios grandes. La maravilla y el asombro del espacio y los instrumentos científicos que usamos para estudiarlo brillan en este libro fascinante. Los diagramas e ilustraciones a todo color ayudarán a los estudiantes a visualizar cómo funciona la tecnología de los telescopios. ¡Los estudiantes aprenderán sobre la creación de espejos de 8 metros de ancho y equipos de telescopios que trabajan juntos para crear un telescopio tan poderoso como si tuviera un espejo del tamaño de la Tierra! -
Este libro les dará a los estudiantes una comprensión de la historia del vuelo hasta la tecnología y los descubrimientos científicos que nos permiten volar aviones tan grandes como los superjumbo jets actuales. ¿Cómo se diseñan los aviones para que puedan operar de manera segura? ¿Cuál es el futuro del vuelo? ¡Todas estas preguntas y más serán respondidas a medida que los estudiantes echen un vistazo a los superjumbo jets, por dentro y por fuera!
