cover image Twilight of the Mammoths: Ice Age Extinctions and the Rewilding of America

Twilight of the Mammoths: Ice Age Extinctions and the Rewilding of America

Paul S. Martin, . . Univ. of California, $29.95 (250pp) ISBN 978-0-520-23141-2

Paleontologist Martin delivers an energetic and highly entertaining look at one of the most controversial issues in his field of geoscience: overkill, the argument that "virtually all extinctions of wild animals in the last 50,000 years are anthropogenic, that is, caused by humans" and not by climate change. As one of the leading advocates of this theory, Martin uses his own extensive research—as well as amusing insights from his personal life and career—to make his case. He draws on studies from Costa Rica and Madagascar to California and the Grand Canyon, and brings alive on the page such extinct creatures as mammoths, mastodons and the "gentle giant" ground sloths, which he shows were present in North America before the arrival of prehistoric people. He is quite fair in presenting opposing arguments and displays his ability to explain complex concepts in understandable ways. But while Martin is convincing in his reasoning and his suggestions for developing new ecological parks to increase our appreciation of the lost beasts, what is most memorable is his ability to show that "we are half blind if we behold the Grand Canyon without visions" of its extinct species. 17 b&w photos, 12 line drawings. (Nov.)