"The very first police in what is now the United States were Native American warriors who kept order during hunts. Today, American law enforcement includes the Texas Rangers, Secret Service, and U.S. Marshals Service, among many others. Find out more in Law Enforcement, one of the titles in The Hidden World of Crime series." -- Back cover.

Describes the CIA, including what it is and what CIA agents do.

"Explores the history and impact of the Bubonic plague."--

"Explores the history and impact of cholera"--

"Imagine microscopic worms living in the soil. They enter your body through your bare feet, travel to your intestines, and stay there for years sucking your blood like vampires. You feel exhausted. You get sick easily. It sounds like a nightmare, but that's what happened in the American South during the 1800s and early 1900s. Doctors never guessed that hookworms were making patients ill, but zoologist Charles Stiles knew better. Working with one of...

It's a bird! It's... another bird? Well, actually it's a whole flock of crime-fighting pigeons! The hilarity continues in this reluctant-reader favorite, perfect for fans of BAD GUYS and DOG MAN. With the Real Pigeons World Wild Network, more pigeons are fighting crime than ever before! But that doesn't mean the squad can rest. There are still thieves to catch and endangered birds to protect! But what will the Real Pigeons do when they find a traitor...

Includes bibliographical references and index. Intro/what is bullying? -- Types of bullying -- The bully -- Targets of bullying -- The bystander -- Bully prevention : an anti-bullying toolkit -- What have we learned.

Tells about the use of dogs for bomb detection and then describes their selection, training, and accomplishments.

Describes how dogs can alert their owners to certain medical conditions or situations, such as approaching epileptic fits or loss of consciousness due to diabetes, and how they are being trained to detect cancer by smell.