This new and expanded Fourth Edition of Dr. Benarde's myth-defying book uses an evidence-based approach to refute today's pervasive, environmental doomsday hype. With up-to-date information consolidated from authoritative scientific journals and presented in highly readable form, Our Precarious Habitat . . . It's In Your Hands: covers hot-button issues like global warming, nuclear energy, electromagnetic fields, alternative health practices, and more; covers illnesses such as SARS, avian flu, West Nile virus, and prion diseases like mad cow; and includes facts, figures, tables, and charts derived from respected scientific sources and presented in easy-to-understand terms.