Describes the activities of non-profit organizations throughout the world that work with the environment, including groups that campaign for government action and social and economic change, and those
Looks at the history of medicine in the ancient world, examining how people faced new problems as their communities grew larger, and how physicians began to recognize that diseases might have natural
Looks at society's reliance on fossil fuels, discusses the benefits and limitations of renewable sources, and examines how energy can be used more efficiently.
Provides facts and opinions on the possible benefits of organic food, and offers techniques for thinking critically and ideas for organizing debates and discussions.
Presents views that support and discredit the value of eating meat and discusses killing for food, the treatment of farm animals, and meat and the environment.
