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.

A spirited volume on the great adventures of science throughout history, for curious readers of all ages

Twenty-three mathematical masterpieces for exploration and enlightenment

The new edition continues to convey the importance of understanding the basic physics underlying the operation of instruments. This edition includes upto date information on new technical developments that continue to enhase the instruments and techniques availible for the detection and spectroscopy of ionizing radiation. .

Updated to take into account the latest national and international standards for radiation facility shielding. Includes appendices on parameters used in shielding calculations and detailed properties of common barrier materials; and many example calculations.

A number one Irish bestseller, and winner of the Popular Non-Fiction Book of the Year at the Irish Book Awards.