Presents a contemporary natural history of okapi, a relative of the giraffe. This book recounts its discovery by European explorers, and describes its appearance and life cycle. It also discusses efforts to preserve the species, both in the wild and at zoos around the world. It is useful for conservationists and zoo visitors alike.

From the best-selling author of The Seven Daughters of Eve, an illuminating guide to the genetic history of the British Isles.

This, the most interesting and helpful edition of Charles Darwin's major work, is now available in an inexpensive paperback edition. It is written with a clarity, forcefulness, and conciseness not found in any subsequent revision. For modern reading and for reference, it is the standard edition.

Mountain Gorillas features stunning photos and four appendices documenting key biological and ecological information, habitat vegetation, milestones in mountain gorilla conservation, and travel information.

Understanding Cancer explains the biological processes that underlie cancer and inform our treatment of it. McIntosh presents stories of people touched by cancer, while maintaining precision about what is known and still unknown about cancer's onset, development, prognosis, and current treatment.

Praised forits clarity of presentation and accessibility, Introduction to Modern Virology has been a successful student text for over 30 years.