Viruses

Viruses, the tiniest invaders of plants and animals, have probably been around since the beginnings of life on earth. While exploring the microscopic world of viruses, you learn what they are, how they attack cells, and how they change. The authors introduce the scientists who found the viruses that cause deadly diseases such as smallpox, rabies, polio, and AIDS, and you learn about the controls and vaccines developed for these diseases. The exciting work now being done with viruses is also explored--work that continually finds new uses for viruses.