In twelve dioramic scenes, discover how warships have changed from the sail and oar power of ancient Greek triremes and 19th century ships of the line to iron warships of the early 20th century and today's modern aircraft carriers and stealth missile destroyers.

Some commodities command massive economic, social, and political influence. This title examines the business around coal, one of the world's most important sources of energy. It explores the history of the coal industry, coal's environmental impact and what is being done to mitigate it, and the future of the coal industry and coal technology. Features include essential facts, a glossary, selected bibliography, websites, source notes, and an index....

How soon can you board a rocketship to Mars? And how will you survive when you get there? There are so many challenges to overcome in sending a human into space, such as problems of distance, fuel, and propulsion. This compelling book describes the history and future of space travel and the exciting areas of research travel presents.

Our star is a dynamo of energy that we cannot live without. Readers will enjoy the detailed information about the Sun's makeup and life phases. Special sidebars will draw young enthuiasts into making real-life decisions about harnessing the Sun's power for our use now and for the future.

How was the solar system created? Why are the Sun and Moon the same size in the sky? These are just some of the questions answered in this exciting book about our seemingly endless solar system. Readers will love the problem-solving focus that makes space exploration an adventure in innovation.

Some commodities command massive economic, social, and political influence. This title examines the business around steel, the metal that supports many of the world's buildings and structures. It explores the origins of steel, key technological advances, and the ways in which the industry continues to innovate today. Features include essential facts, a glossary, selected bibliography, websites, source notes, and an index. Aligned to Common Core Standards...

Some commodities command massive economic, social, and political influence. This title examines the business around sugar, a product with massive influence in the energy and food industries. It explores sugar's historical influence, its use in biofuels, and its place in the modern diet. Features include essential facts, a glossary, selected bibliography, websites, source notes, and an index. Aligned to Common Core Standards and correlated to state...

Tracing Millay's life from her youth in Maine to the bohemian fervor of her early adulthood in Greenwich Village and Paris to the demanding existence of a public personality, this fascinating biography will captivate middle grade readers. Including photos, full-length poems, plentiful letter and diary excerpts, a time line, source notes, and bibliography, this is an indispensable resource for any young person interested in poetry, literature, or biographies...

From the Mark I to the powerful turreted tanks of World War Two and the modern missile-firing, troop-carrying light tanks of today's armies, twelve dioramic scenes reveal how the invention of the tank during World War One changed the face of warfare forever.

From the first rockets used to fire arrows to modern computer-controlled cruise missiles and wire-guided High Explosive Anti-Tank Missiles, twelve dioramic scenes reveal how rockets and missiles have gradually become the primary weapons of mechanized warfare.