This Very Short Introduction, addresses a variety of questions, including what a black hole actually is, how they are characterized and discovered, and what would happen if you came too close to one. Professor Katherine Blundell looks at the seemingly paradoxical, mysterious, and intriguing phenomena of black holes. Outlining their nature and characteristics, both those resulting from the spectacular collapse of heavy stars, and the giant black holes found at the centres of galaxies, she separates scientific fact from science fiction, and demonstrates the important role they play in the cosmos. ABOUT THE SERIES: The Very Short Introductions series from Oxford University Press contains hundreds of titles in almost every subject area. These pocket-sized books are the perfect way to get ahead in a new subject quickly. Our expert authors combine facts, analysis, perspective, new ideas, and enthusiasm to make interesting and challenging topics highly readable.

    In simple, clear, concise terms the basics of map and compass work are described and illustrated." --George T. Hamilton, Appalachia This new, enlarged edition of Be Expert with Map & Compass includes everything the beginner needs to know about the increasingly popular sport of Orienteering: understanding map symbols; traveling by map alone, by compass alone, or by map and compass together; finding bearings; sketching maps; and traveling in the wilderness. Other updated sections cover competitive Orienteering, how to join an Orienteering event or organize your own, and useful hints for competitive and wilderness Orienteering. In addition to the revisions throughout, the author has interspersed the text with reminiscences of his more than fifty years of experience with map and compass. Drawing crowds of 25,000 participants at international events, the sport of Orienteering is more popular than ever. The Orienteering world championships were held in the United States for the first time in 1993. For Orienteers and scouts, avid outdoorspeople, and anyone who wants to feel more comfortable in the wilderness, this updated guide is an indispensable reference.

    With whimsically hip illustrations, every page is an extraordinary look at all kinds of subjects, from mineral formation and the inside of a volcano to what makes sunsets, monarch butterfly migration, the ecosystem of a rotting log, the parts of a bird, the anatomy of a jellyfish, and much, much more.

    . . . This is an exciting book. Although Schaller feels that this is 'not an adventure book,' few readers will be able to agree."—Irven DeVore, Science