Police officers typically are responsible for maintaining public order and safety, enforcing the law, and preventing, detecting, and investigating criminal activities. Police may also perform licensing and regulatory duties. This resource examines the role of police at various levels of society, from small communities to state and national jurisdictions. It addresses the concept of due process and the relationship between police and court systems. It considers controversial issues such as ...

This insightful book explores the details of the supply chain, specifically the distribution of goods and services. From the origin of goods and services, as raw materials or laborers, to their final use by consumers, the path of distribution is described in straightforward language. Students learn about the four main marketing channels, merchant and functional middlemen, direct sales, retailing, wholesaling, transportation and business logistics, the marketing of products to consumers, an...

Stories of magic, superstition, and witchcraft were strictly forbidden in the little town of Salem Village. But a group of young girls ignored those rules, spellbound by the tales told by a woman named Tituba. When questioned about their activities, the terrified girls set off a whirlwind of controversy as they accused townsperson after townsperson of being witches. Author Shirley Jackson examines in careful detail this horrifying true story of accusations, trials, and executions that shoo...

Make amazing robots and gadgets with two of today’s hottest DIY technologies. With this easy-to-follow guide, you’ll learn how to build devices with Lego Mindstorms NXT 2.0, the Arduino prototyping platform, and some add-on components to bridge the two. Mindstorms alone lets you create incredible gadgets. Bring in Arduino for some jaw-dropping functionality—and open a whole new world of possibilities.Build a drink dispenser, music synthesizer, wireless lamp, and more

Philip Pullman’s His Dark Materials trilogy is renowned for its mystery and magic. What’s the truth behind it all?Is the golden compass actually based in science? How does the subtle knife cut through anything? Could there be a bomb like the one made with Lyra’s hair? How do the Gallivespians’ lodestone resonators really work? And, of course, what are the Dark Materials? Drawing on string theory and spacetime, quantum physics and chaos theory, award-winning science...

Gum. It’s been around for centuries—from the ancient Greeks to the American Indians, everyone’s chewed it. But the best kind of gum—bubble gum!—wasn’t invented until 1928, when an enterprising young accountant at Fleer Gum and Candy used his spare time to experiment with different recipes. Bubble-blowing kids everywhere will be delighted with Megan McCarthy’s entertaining pictures and engaging fun facts as they learn the history behind the pink perfection of Dubble Bubble.

Engineering has existed in one form or another for millennia but gained considerable traction during the twentieth century with the creation of aerospace, biomedical, genetic, and nuclear engineering. It also saw incredible advances in the areas of civil, chemical, and mechanical engineering. This wide-ranging volume introduces readers to the engineering field, chronicling the development of its various subfields and their growing importance in a world driven by innovation. Readers will le...

Tom Sawyer is among the best-known, most-loved characters in American fiction. As everyone remembers, he and Huck Finn camped on an island, got lost in a cave, and visited an old graveyard at midnight. These adventures were based upon the author's real boyhood experiences along the Mississippi River. Trace Mark Twain's life from 1835, when his birth was heralded by Halley's Comet, to 1910, when the comet returned upon his death, in this fascinating biography by Newbery Honor author Sterlin...

While the reality of intelligence gathering isn’t always as thrilling as popular spy novels and films make it seem, modern intelligence gathering operations are ample and a crucial part of diplomacy and military operations. This in-depth guide covers the nature and intriguing history of intelligence gathering. The types and sources of intelligence are presented thoroughly alongside important historical examples of spy operations or technologies used in the spy game. The text also provides ...

The history of policing dates back to antiquity, when great civilizations such as Egypt, Greece, and Rome developed the first systems to enforce public order. In the time since, countries have developed modern, efficient, and professional police forces to help catch criminals and impose order in the streets. This guide covers the history and development of policing activity, complementing the story of law enforcement with discussions of the theorists and lawmakers who most influenced its e...

Welcome to the exciting world of forensic science, where every contact leaves a trace! This book shows how real-life detectives solve crimes with human signposts: fingerprints, the most well-known human indentifying mark; as well as newer technologies, like bite mark matching; and controversial new evidence, such as ear prints. Prepare yourself for a wild ride through some of the most shocking and mysterious crimes of history, the twentieth century, and today...you may never look at your f...

An astonishing account of the assassination of America's most beloved and celebrated civil rights leader, Martin Luther King, by NY Times bestselling author, James L. Swanson.NAACP Image Award NomineeChicago Public Library Best Book of the YearKirkus Reviews Best Young Adult Book of the Year* "[James L. Swanson's] masterful work... reveals, in gripping style, how one individual can impact history." --Booklist, starred reviewIn his meteoric, thirte...