Introduces readers to mammals that are classified as endangered today. It examines why they may have become endangered as well as conservation efforts being made to help them.
This book explores the myths about inventors and their inventions and brings the truth to light. But many popular stories about the creation of American inventions have gotten some facts wrong and left out others altogether.
Eradicating smallpox was one of the great medical success stories in human history. The disease once killed large numbers of people, but vaccination programs brought case numbers to zero by the 1970s. This book explores the history and science behind this disease, as well as how it's treated.