Ward, Peter, Out of Thin Air: Dinosaurs, Birds, And Earth’s Ancient Atmosphere, John Henry Press, 2006. 282 pp.
Out of Thin Air takes the reader on a wide-ranging journey through the earth sciences, melding cosmology, the geological and climatological history of Earth, and the story of the evolution of life on Earth. It’s a unique reading experience because it proposes a theoretical change-of-perspective so profound and so recent that the author is hustling (with a large number of scientific colleagues) to publish scientific articles which outline the implications of the new information and re-assess many assumptions about the ancient past. Out of Thin Air is a snapshot of science on the run. What it lacks in conclusiveness it restores with the excitement of iconoclasm and the possible revision of decades-old assumptions.
The book opens with the haunting image of mountain climbers dying of hypoxia near the top of Mount Everest as Tibetan bar-headed geese migrate overhead without apparent danger. How are birds able to survive flight at such high altitudes during such tremendous migratory exertions? Clearly, bird physiology is different in some profound way from that of mammals and reptiles. What are the ancient roots of this difference and does it have anything to do with the apparent dinosaurian origins of modern birds?