Drawing on extensive conservation experience in the greater Yellowstone region, Susan G. Clark outlines the leadership and policy issues associated with managing greater Yellowstone's natural resources and asseses the successes and failures of those who have worked there toward sustainability over the past 40 years.

And speculation: Summary -- Speculation.

Renowned photographer Thomas D. Mangelsen’s latest project focuses on a celebrated Yellowstone grizzly bear family, which he has been tracking and photographing for ten years. The grizzly bears of Yellowstone and Grand Teton National Parks are the most famous wild bruins in the world. Millions of people and generations of travelers annually make special pilgrimages to the northern Rockies just to catch sight of these powerful, breathtaking animals. But like a lot of large predator populations on earth, grizzlies in the lower 48 states have struggled for survival. In Grizzly, renowned nature photographer Thomas D. Mangelsen and environmental writer Todd Wilkinson team up to tell the inspiring if sometimes harrowing story of a remarkable bear clan: Mother Grizzly 399 and her generations of offspring. While tracking this charismatic band of bears, Mangelsen has amassed an incomparable photographic portfolio that offers an intimate glimpse into the lives of this celebrated bear family. The rescue of Yellowstone grizzlies ranks as one of the greatest feats of wildlife conservation. WINNER 2016 - Outdoor Writers Association of America - Book of the Year