Collins, Anna

Readers learn how our world is being affected and how they can play a role in minimizing the damage.

"Throughout history, armies have used various kinds of germs to cripple their enemies. International treaties currently outlaw the use of biological weapons, but this does not necessarily mean that none are being developed. Through informative text, augmented by detailed infographics and sidebars, readers learn about the history of biological warfare and ways it can be avoided in the future. Annotated quotes from experts on this topic and discussion questions are also included to give readers a deeper understanding of the many facets of this complex topic."--Provided by publisher.

Debate has long raged over whether graffiti can be considered an art form. Its illegal nature has caused many people to denounce it, while others contend that a work does not have to be legal to be art. The heart of the question is, what defines art? Informative text discusses competing views on the issue, presenting all sides of the debate to help readers form their own opinions. Engaging sidebars spotlight graffiti artists such as the famous Banksy, while eye-catching photographs provide examples of some of the most original graffiti designs.

Provides an overview of marijuana use. Describes the history of use, the effects of use, and the debate over legalization.